APA (7th ed.) Citation

Crispens, C. G. (1978). The vertebrates, their forms and functions. Thomas.

Chicago Style (17th ed.) Citation

Crispens, Charles G. The Vertebrates, Their Forms and Functions. Springfield, Ill.: Thomas, 1978.

MLA (9th ed.) Citation

Crispens, Charles G. The Vertebrates, Their Forms and Functions. Thomas, 1978.