APA (7th ed.) Citation

Gerritsen, T. (1999). Gravity. Pocket Books.

Chicago Style (17th ed.) Citation

Gerritsen, Tess. Gravity. New York: Pocket Books, 1999.

MLA (8th ed.) Citation

Gerritsen, Tess. Gravity. Pocket Books, 1999.

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