California Code, Evidence Code - EVID § 1271

(a) The writing was made in the regular course of a business;

(b) The writing was made at or near the time of the act, condition, or event;

(c) The custodian or other qualified witness testifies to its identity and the mode of its preparation; and

(d) The sources of information and method and time of preparation were such as to indicate its trustworthiness.