APA (7th ed.) Citation

California Historical Society, Bonner, J., Pico, J. R., & Kennedy, L. (1956). Christmas in California. California Historical Society.

Chicago Style (17th ed.) Citation

California Historical Society, John Bonner, Jose Ramon Pico, and Lawton Kennedy. Christmas in California. San Francisco: California Historical Society, 1956.

MLA (9th ed.) Citation

California Historical Society, et al. Christmas in California. California Historical Society, 1956.