APA (7th ed.) Citation

Guasti, C. A. (2001). Earth: An oasis of life. Reader's Digest.

Chicago Style (17th ed.) Citation

Guasti, Carol A. Earth: An Oasis of Life. Pleasantville: Reader's Digest, 2001.

MLA (9th ed.) Citation

Guasti, Carol A. Earth: An Oasis of Life. Reader's Digest, 2001.