APA

Osborn H. F., . (1936). Men of the old stone age. New York: Ch.Scribner's Sons.

Chicago

Osborn Henry Fairfield, . 1936. Men of the old stone age. New York: Ch.Scribner's Sons.

Harvard

Osborn H. F., . (1936). Men of the old stone age. New York: Ch.Scribner's Sons.

MLA

Osborn Henry Fairfield, . Men of the old stone age. New York: Ch.Scribner's Sons. 1936.