Greenberg, Cathy L., author
What happy working mothers know : how new findings in positive psychology can lead to healthy and happy work/life balance
Salemba Humanika, 2011
 Buku Teks
What is the rabbit : finding the rabbit from view of Chinese / [Writing group of the happy new year series].
People's Publshing House, [date of publication not identified]
 Buku Teks
Torney, John C., author
Only you can make you happy: tips praktis hidup bahagia
Kanisius, 2006
 Buku Teks
Roizen, Michael F., author
YOU: The Owner's Manual for Teens: A Guide to a Healthy Body and Happy Life
Free Press, 2011
 Buku Teks
M. Rojaya, author
Happy with zikir
DAR! Mizan , 2006
 Buku Teks
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