Russell, Bertrand, 1872-1970
The Conquest of happiness / Bertrand Russell
Avon Book Divition, 1930
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Malkani, Vikas
All you wanted to know about happiness/ Vikas Malkani
Gramedia, 2004
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Divani Aery Lovian
Pengaruh kedekatan hubungan antara pemberi dan penerima tindakan baik terhadap kebahagiaan = The effect of closeness between giver and receiver act of kindness on happiness
2016
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Ayu Kartika
Lebih baik sekarang daripada nanti: pengaruh waktu pemberian umpan balik dari penerima surat terima kasih terhadap kebahagiaan pengirim = Better now than later: the effect of delayed feedback from receiver of gratitude letter towards sender's happiness
2016
 UI - Skripsi (Membership)
Khavari, Khalil A.
The art of happiness: mencipta kebahagiaan dalam setiap keadaan/Khalil A. Khavari
Serambi Ilmu Semesta, 2000
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