Gaya APA

SIS, P. (2003). The Tree of Life : A Book Depicting The Life of Charles Darwin : Naturalist, Geologist and Thinker (ed. 3). New York: Farrar Straus Giroux.

Gaya MLA

SIS, Peter. "The Tree of Life : A Book Depicting The Life of Charles Darwin : Naturalist, Geologist and Thinker". ed. 3 New York: Farrar Straus Giroux, 2003. Text.