Cita APA (7a ed.)

Romer, A. S. (1971). Man and the vertebrates (1st pub., reprint.). Penguin Books.

Cita Chicago Style (17a ed.)

Romer, Alfred Sherwood. Man and the Vertebrates. 1st pub., reprint. Harmondsworth [etc.]: Penguin Books, 1971.

Cita MLA (9a ed.)

Romer, Alfred Sherwood. Man and the Vertebrates. 1st pub., reprint. Penguin Books, 1971.