California's subject-matter codes are available with annotations from two commercial publishers -- Lexis (Deerings) and West. Unlike other states and the federal government, the state of California does not publish an official set of codes.
Deering's California Code Annotated
KFC 30.5.D4 C52 California Collection (organized by title)
West's Annotated California Codes
California Legislative Counsel (Official California Legislative Information) -- contains electronic text of the current version of the code.