Gaya APA

Sis, P. (2003). The tree of life : a book depicting the of Charles Darwin Naturalist geologist & thinker . New York: Enslow Publishers, Inc.

Gaya MLA

Sis, Peter. "The tree of life : a book depicting the of Charles Darwin Naturalist geologist & thinker". New York: Enslow Publishers, Inc, 2003. Text.