Russell, Bertrand, 1872-1970, author
The Conquest of happiness / Bertrand Russell
Avon Book Divition, 1930
 Buku Teks
Stability of happiness : theories and evidence on whether happiness can change / edited by Kennon M. Sheldon, Richard E. Lucas
Academic Press, 2014
 eBooks
Malkani, Vikas, author
All you wanted to know about happiness/ Vikas Malkani
Gramedia, 2004
 Buku Teks
Divani Aery Lovian, author
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
 UI - Skripsi (Membership)
Ayu Kartika, author
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)
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