APA (7th ed.) Citation

Orr, R. T. (1976). Vertebrate biology (Fourth edition.). Saunders.

Chicago Style (17th ed.) Citation

Orr, Robert T. Vertebrate Biology. Fourth edition. Philadelphia: Saunders, 1976.

MLA (9th ed.) Citation

Orr, Robert T. Vertebrate Biology. Fourth edition. Saunders, 1976.

Warning: These citations may not always be 100% accurate.