Citazione Stile APA (7a Edizione)

DOWNS, J. F., & Bleibtreu, H. K. (1969). Human variation: An introduction to physical anthropology. Glencoe.

Citazione stile Chigago Style (17a edizione)

DOWNS, James F., e Herman K. Bleibtreu. Human Variation: An Introduction to Physical Anthropology. California: Glencoe, 1969.

Citatione MLA (9a ed.)

DOWNS, James F., e Herman K. Bleibtreu. Human Variation: An Introduction to Physical Anthropology. Glencoe, 1969.