APA (7th ed.) Citation

Orr, R. T. (1966). Vertebrate biology (2nd ed.). W. B. Saunders.

Chicago Style (17th ed.) Citation

Orr, Robert T. Vertebrate Biology. 2nd ed. Philadelphia: W. B. Saunders, 1966.

MLA (9th ed.) Citation

Orr, Robert T. Vertebrate Biology. 2nd ed. W. B. Saunders, 1966.