APA

Garrett L., Crawford A., . (2006). Earth Smart. London: Dorling Kindersley.

Chicago

Garrett Leslie, Crawford Andy, . 2006. Earth Smart. London: Dorling Kindersley.

Harvard

Garrett L., Crawford A., . (2006). Earth Smart. London: Dorling Kindersley.

MLA

Garrett Leslie, Crawford Andy, . Earth Smart. London: Dorling Kindersley. 2006.