APA (7th ed.) Citation
Downs, J. F., & Bleibtreu, H. K. (1969). Human variation: An introduction to physical anthropology. Glencoe Press.
Chicago Style (17th ed.) Citation
Downs, James F., and Hermann K. Bleibtreu. Human Variation: An Introduction to Physical Anthropology. Beverly Hills, Calif.: Glencoe Press, 1969.
MLA (9th ed.) Citation
Downs, James F., and Hermann K. Bleibtreu. Human Variation: An Introduction to Physical Anthropology. Glencoe Press, 1969.
Warning: These citations may not always be 100% accurate.