龚勋. (2012). 中国学生最想解开的1001个地球之谜: Puzzle of the earth. 人民武警出版社.
Chicago Style (17th ed.) Citation龚勋. 中国学生最想解开的1001个地球之谜: Puzzle of the Earth. 人民武警出版社, 2012.
MLA (8th ed.) Citation龚勋. 中国学生最想解开的1001个地球之谜: Puzzle of the Earth. 人民武警出版社, 2012.
Warning: These citations may not always be 100% accurate.