APA (7th ed.) Citation

Romer, A. S. (1957). Man and the vertebrates (1st pub., reprint.). Penguin Books.

Chicago Style (17th ed.) Citation

Romer, Alfred Sherwood. Man and the Vertebrates. 1st pub., reprint. Harmondsworth [etc.]: Penguin Books, 1957.

MLA (9th ed.) Citation

Romer, Alfred Sherwood. Man and the Vertebrates. 1st pub., reprint. Penguin Books, 1957.