龚勋. (2009). 十万个为什么: Knowledge for the students. 云南教育出版社.
Chicago Style (17th ed.) Citation龚勋. 十万个为什么: Knowledge for the Students. 云南教育出版社, 2009.
MLA (8th ed.) Citation龚勋. 十万个为什么: Knowledge for the Students. 云南教育出版社, 2009.
Warning: These citations may not always be 100% accurate.