Gaya APA

Leonard, J, N., Books, T, E, O, T, L. (1981). Great ages of man. A history of the world's cultures Ancient america . : time life books.

Gaya MLA

Leonard, Jonathan, Norton., Books, The, Editors, Of, Time, Life. "Great ages of man. A history of the world's cultures Ancient america". : time life books, 1981. Text.