APA (7th ed.) Citation

Brashares, A., & Goethals, A. (2007). Forever in blue: The fourth summer of the Sisterhood. Random House/Listening Library.

Chicago Style (17th ed.) Citation

Brashares, Ann, and Angela Goethals. Forever in Blue: The Fourth Summer of the Sisterhood. New York: Random House/Listening Library, 2007.

MLA (8th ed.) Citation

Brashares, Ann, and Angela Goethals. Forever in Blue: The Fourth Summer of the Sisterhood. Random House/Listening Library, 2007.