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 Style aipamena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 aipamena程功. 365天幸福你自己: Daily Book of Your Happiness. 中华工商联合出版社, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.