Affidavits
California Code of Civil Procedure, Part 4, Title 3, Chapter 3, Article 2
Cal. Code Civ. Proc. §§ 2009 – 2015.6

§ 2009
An affidavit may be used to verify a pleading or a paper in a special proceeding, to prove the service of a summons, notice, or other paper in an action or special proceeding, to obtain a provisional remedy, the examination of a witness, or a stay of proceedings, and in uncontested proceedings to establish a record of birth, or upon a motion, and in any other case expressly permitted by statute.
§ 2010
Evidence of the publication of a document or notice required by law, or by an order of a Court or Judge, to be published in a newspaper, may be given by the affidavit of the printer of the newspaper, or his foreman or principal clerk, annexed to a copy of the document or notice, specifying the times when, and the paper in which, the publication was made.
§ 2011
If such affidavit be made in an action or special proceeding pending in a Court, it may be filed with the Court or a Clerk thereof.  If not so made, it may be filed with the Clerk of the county where the newspaper is printed. In either case the original affidavit, or a copy thereof, certified by the Judge of the Court or Clerk having it in custody, is prima facie evidence of the facts stated therein.
§ 2012
An affidavit to be used before any court, judge, or officer of this state may be taken before any officer authorized to administer oaths.
§ 2013
An affidavit taken in another State of the United States, to be used in this State, may be taken before a Commissioner appointed by the Governor of this State to take affidavits and depositions in such other State, or before any Notary Public in another State, or before any Judge or Clerk of a Court of record having a seal.
§ 2014
An affidavit taken in a foreign country to be used in this State, may be taken before an Embassador, Minister, Consul, Vice Consul, or Consular Agent of the United States, or before any Judge of a Court of record having a seal in such foreign country.
§ 2015
When an affidavit is taken before a Judge or a Court in another State, or in a foreign country, the genuineness of the signature of the Judge, the existence of the Court, and the fact that such Judge is a member thereof, must be certified by the Clerk of the Court, under the seal thereof.
§ 2015.3
The certificate of a sheriff, marshal, or the clerk of the superior court, has the same force and effect as his or her affidavit.
§ 2015.5
Whenever, under any law of this state or under any rule, regulation, order or requirement made pursuant to the law of this state, any matter is required or permitted to be supported, evidenced, established, or proved by the sworn statement, declaration, verification, certificate, oath, or affidavit, in writing of the person making the same (other than a deposition, or an oath of office, or an oath required to be taken before a specified official other than a notary public), such matter may with like force and effect be supported, evidenced, established or proved by the unsworn statement, declaration, verification, or certificate, in writing of such person which recites that it is certified or declared by him or her to be true under penalty of perjury, is subscribed by him or her, and (1), if executed within this state, states the date and place of execution, or (2), if executed at any place, within or without this state, states the date of execution and that it is so certified or declared under the laws of the State of California.  The certification or declaration may be in substantially the following form:
  1. If executed within this state:
    "I certify (or declare) under penalty of perjury that the
    foregoing is true and correct":
    _____________              ___________
    (Date and Place)            (Signature)
    
  2. If executed at any place, within or without this state:
    "I certify (or declare) under penalty of perjury under the 
    laws of the State of California that the foregoing is true 
    and correct":
    _____________            ___________
    (Date)                  (Signature)
    
§ 2015.6
Whenever, under any law of this State or under any rule, regulation, order or requirement made pursuant to law, an oath is required to be taken by a person appointed to discharge specific duties in a particular action, proceeding or matter, whether or not pending in court, including but not limited to a person appointed as executor, administrator, guardian, conservator, appraiser, receiver, or elisor, an unsworn written affirmation may be made and executed, in lieu of such oath.  Such affirmation shall commence "I solemnly affirm," shall state the substance of the other matter required by the oath, the date and place of execution and shall be subscribed by him.

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