APA

Atwood M., . (1972). Life before man. New York: Simon & Schuster.

Chicago

Atwood Margaret, . 1972. Life before man. New York: Simon & Schuster.

Harvard

Atwood M., . (1972). Life before man. New York: Simon & Schuster.

MLA

Atwood Margaret, . Life before man. New York: Simon & Schuster. 1972.