Corey, G., & Corey, C. Living and learning. Wadsworth.
Chicago Style (17th ed.) ZitazioaCorey, Gerald, eta Cindy Corey. Living and Learning. Belmont: Wadsworth.
MLA (9th ed.) ZitazioaCorey, Gerald, eta Cindy Corey. Living and Learning. Wadsworth.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.