APA (7th ed.) Citation

Webster, D. B., & Webster, M. (1974). Comparative vertebrate morphology. Academic Press.

Chicago Style (17th ed.) Citation

Webster, Douglas B., and Molly Webster. Comparative Vertebrate Morphology. New York [etc.]: Academic Press, 1974.

MLA (9th ed.) Citation

Webster, Douglas B., and Molly Webster. Comparative Vertebrate Morphology. Academic Press, 1974.