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 (17th ed.) Citation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 citiranje程功. 365天幸福你自己: Daily Book of Your Happiness. 中华工商联合出版社, 2012.
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