A Key to Chinese Speech and Writing : 1.

MLA

Bellassen, Joël - 白乐桑, and Pengpeng - 张朋朋 Zhang. A Key to Chinese Speech and Writing : 1. 北京 Beijing: 华语教学出版社 Sinolingua, 1997.

APA

Bellassen, J. - 白乐桑, & Zhang, P. - 张朋朋. (1997). A Key to Chinese Speech and Writing : 1. 北京 Beijing: 华语教学出版社 Sinolingua.

Chicago

Bellassen, Joël - 白乐桑, and Pengpeng - 张朋朋 Zhang. A Key to Chinese Speech and Writing: 1. 北京 Beijing: 华语教学出版社 Sinolingua, 1997.