APA (7th ed.) Citation

Vaillant, G. C. (1951). The Aztecs of Mexico. Penguin Books.

Chicago Style (17th ed.) Citation

Vaillant, George C. The Aztecs of Mexico. Harmondsworth, Middlesex: Penguin Books, 1951.

MLA (9th ed.) Citation

Vaillant, George C. The Aztecs of Mexico. Penguin Books, 1951.

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