Cita APA

Jones, M. L., Swartz, S. L., & Leatherwood, S. (1984). Gray whale: Eschrichtius robustus. Academic Press.

Chicago Edition Citation

Jones, Mary Lou, Steven L. Swartz, i Stephen Leatherwood. Gray Whale: Eschrichtius Robustus. Orlando, Fla.: Academic Press, 1984.

Cita MLA

Jones, Mary Lou, et al. Gray Whale: Eschrichtius Robustus. Academic Press, 1984.