程功. (2012). 365天幸福你自己: Daily book of your happiness. 中华工商联合出版社.
Chicago (17e ed.) Bronvermelding程功. 365天幸福你自己: Daily Book of Your Happiness. 中华工商联合出版社, 2012.
MLA (8e ed.) Bronvermelding程功. 365天幸福你自己: Daily Book of Your Happiness. 中华工商联合出版社, 2012.
Let op: Deze citaties zijn niet altijd 100% accuraat.