California Code
ARTICLE 1 - General Provisions
Section 2020.010.

2020.010. (a) Any of the following methods may be used to obtain discovery within the state from a person who is not a party to the action in which the discovery is sought:

(1) An oral deposition under Chapter 9 (commencing with Section 2025.010).

(2) A written deposition under Chapter 11 (commencing with Section 2028.010).

(3) A deposition for production of business records and things under Article 4 (commencing with Section 2020.410) or Article 5 (commencing with Section 2020.510).

(b) Except as provided in subdivision (a) of Section 2025.280, the process by which a nonparty is required to provide discovery is a deposition subpoena.

(Added by Stats. 2004, Ch. 182, Sec. 23. Effective January 1, 2005. Operative July 1, 2005, by Sec. 64 of Ch. 182.)