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 Style aipamena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 aipamena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.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.