龚勋. (2012). 感恩朋友: Real friendship will be treasured by us for ever. 汕头大学出版社.
Cita Chicago Style (17a ed.)龚勋. 感恩朋友: Real Friendship Will Be Treasured by Us for Ever. 汕头大学出版社, 2012.
Cita MLA (8a ed.)龚勋. 感恩朋友: Real Friendship Will Be Treasured by Us for Ever. 汕头大学出版社, 2012.
Precaución: Estas citas no son 100% exactas.