APA (7th ed.) Citation

Romer, A. S. (1954). Man and the vertebrates. Penguin Books.

Chicago Style (17th ed.) Citation

Romer, Alfred Sherwood. Man and the Vertebrates. Harmondsworth, Middlesex: Penguin Books, 1954.

MLA (8th ed.) Citation

Romer, Alfred Sherwood. Man and the Vertebrates. Penguin Books, 1954.

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