APA (7th ed.) Citation

Garth, J. S., & Tilden, J. W. (1986). California butterflies. University of California Press.

Chicago Style (17th ed.) Citation

Garth, John S., and James W. Tilden. California Butterflies. Berkeley: University of California Press, 1986.

MLA (9th ed.) Citation

Garth, John S., and James W. Tilden. California Butterflies. University of California Press, 1986.