Cal. Code of Civil Procedure § 2033.060

(a) A party requesting admissions shall number each set of requests consecutively. (b) In the first paragraph immediately below the title of the case, there shall appear the identity of the party requesting the admissions, the set number, and the identity of the responding party. (c) Each request for admission in a set shall be separately set forth and identified by letter or number. (d) Each request for admission shall be full and complete in and of itself. No preface or instruction shall be included with a set of admission requests unless it has been approved under Chapter 17 (commencing with Section 2033.710). (e) Any term specially defined in a request for admission shall be typed with all letters capitalized whenever the term appears. (f) No request for admission shall contain subparts, or a compound, conjunctive, or disjunctive request unless it has been approved under Chapter 17 (commencing with Section 2033.710). (g) A party requesting an admission of the genuineness of any documents shall attach copies of those documents to the requests, and shall make the original of those documents available for inspection on demand by the party to whom the requests for admission are directed. (h) No party shall combine in a single document requests for admission with any other method of discovery.