张伟 & 王灿雷. (2009). 问题出在4年级: Problem in the fourth grade. 京华出版社.
Chicago Style (17th ed.) Citation张伟 and 王灿雷. 问题出在4年级: Problem in the Fourth Grade. 京华出版社, 2009.
MLA (8th ed.) Citation张伟 and 王灿雷. 问题出在4年级: Problem in the Fourth Grade. 京华出版社, 2009.
Warning: These citations may not always be 100% accurate.