裴春艳. (2011). 苹果睡着了: Apples are sleeping. 天津教育出版社.
Chicago Style aipamena裴春艳. 苹果睡着了: Apples Are Sleeping. 天津教育出版社, 2011.
MLA aipamena裴春艳. 苹果睡着了: Apples Are Sleeping. 天津教育出版社, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena