CA Civ Proc Code Section 2019.010

Any party may obtain discovery by one or more of the following methods:

(a)

Oral and written depositions.

(b)

Interrogatories to a party.

(c)

Inspections of documents, things, and places.

(d)

Physical and mental examinations.

(e)

Requests for admissions.

(f)

Simultaneous exchanges of expert trial witness information.