于德北著. (2014). 小树叶的悄悄话. 煤炭工业出版社.
Chicago Style (17th ed.) Citation于德北著. 小树叶的悄悄话. 煤炭工业出版社, 2014.
MLA (8th ed.) Citation于德北著. 小树叶的悄悄话. 煤炭工业出版社, 2014.
Warning: These citations may not always be 100% accurate.
APA (7th ed.) Citation