波尔 & 英潘. (2018). 世界为谁存在？: Who is the world for? 长江少年儿童出版社.
Chicago Style (17th ed.) Citation波尔 and 英潘. 世界为谁存在？: Who Is the World for? 长江少年儿童出版社, 2018.
MLA (8th ed.) Citation波尔 and 英潘. 世界为谁存在？: Who Is the World for? 长江少年儿童出版社, 2018.
Warning: These citations may not always be 100% accurate.