APA (7th ed.) Citation

Gerritsen , T. (2004). Gravity. HarperCollins.

Chicago Style (17th ed.) Citation

Gerritsen , Tess. Gravity. London: HarperCollins, 2004.

MLA (9th ed.) Citation

Gerritsen , Tess. Gravity. HarperCollins, 2004.

Warning: These citations may not always be 100% accurate.