APA (7th ed.) Citation

Matthew, W. D., & Chubb, S. H. (1932). Evolution of the horse: In two parts (Sixth edition, revised.). [American Museum of Natural History].

Chicago Style (17th ed.) Citation

Matthew, William Diller, and S. Harmsted Chubb. Evolution of the Horse: In Two Parts. Sixth edition, revised. New York: [American Museum of Natural History], 1932.

MLA (9th ed.) Citation

Matthew, William Diller, and S. Harmsted Chubb. Evolution of the Horse: In Two Parts. Sixth edition, revised. [American Museum of Natural History], 1932.