Cita APA (7th ed.)

Hopkirk, J. D. (1973). Endemism in fishes of the Clear Lake region of central California. University of California Press.

Cita Chicago (17th ed.)

Hopkirk, John D. Endemism in Fishes of the Clear Lake Region of Central California. Berkeley: University of California Press, 1973.

Cita MLA (9th ed.)

Hopkirk, John D. Endemism in Fishes of the Clear Lake Region of Central California. University of California Press, 1973.