APA (7th ed.) Citation

Petti, K., Amodeo, J., & Westwood, C. (2004). The astral summer. Grosset & Dunlap Publishers.

Chicago Style (17th ed.) Citation

Petti, Ken, John Amodeo, and Cassandra Westwood. The Astral Summer. New York: Grosset & Dunlap Publishers, 2004.

MLA (9th ed.) Citation

Petti, Ken, et al. The Astral Summer. Grosset & Dunlap Publishers, 2004.