Gaya APA

Whitelaw, I., Cunliffe, V. (2005). E-book Eyewitness: Ecology . New York: Dorling Kindersley Ltd.

Gaya MLA

Whitelaw, Ian., Cunliffe, Val. "E-book Eyewitness: Ecology". New York: Dorling Kindersley Ltd, 2005. Text.