APA (7th ed.) Citation

快乐编著. (2016). 地球. 北方妇女儿童出版社.

Chicago Style (17th ed.) Citation

快乐编著. 地球. 北方妇女儿童出版社, 2016.

MLA (8th ed.) Citation

快乐编著. 地球. 北方妇女儿童出版社, 2016.

Warning: These citations may not always be 100% accurate.