牛千寻 & 张文元. (2009). 动物与植物之谜 二: The Enigma of Animal & Plant. 京华出版社.
Chicago Style (17th ed.) Citation牛千寻 and 张文元. 动物与植物之谜 二: The Enigma of Animal & Plant. 京华出版社, 2009.
MLA (8th ed.) Citation牛千寻 and 张文元. 动物与植物之谜 二: The Enigma of Animal & Plant. 京华出版社, 2009.
Warning: These citations may not always be 100% accurate.