白云. (2014). 奇趣自然未解之谜: Unsolved mysteries of interesting nature. 北方妇女儿童出版社.
Chicago (17e ed.) Bronvermelding白云. 奇趣自然未解之谜: Unsolved Mysteries of Interesting Nature. 北方妇女儿童出版社, 2014.
MLA (8e ed.) Bronvermelding白云. 奇趣自然未解之谜: Unsolved Mysteries of Interesting Nature. 北方妇女儿童出版社, 2014.
Let op: Deze citaties zijn niet altijd 100% accuraat.