APA (7th ed.) Citation

Dessen, S. (2011). What happened to goodbye. Viking Childrens Books.

Chicago Style (17th ed.) Citation

Dessen, Sarah. What Happened to Goodbye. New York: Viking Childrens Books, 2011.

MLA (8th ed.) Citation

Dessen, Sarah. What Happened to Goodbye. Viking Childrens Books, 2011.