Bryan Lo`s
Wealth life : the easy lifestyle to achieve happiness, wealth and financial freedom
Awesome Books Publishing SDN BHN, 2002
 Buku Teks
Henderson, David R.
The joy of freedom : an economist's odyssey
Prentice-Hall, 2002
 Buku Teks
Guyer, Paul
Kant on freedom, Law and happiness
Cambridge University Press, 2000
 Buku Teks
Malkani, Vikas
All you wanted to know about happiness/ Vikas Malkani
Gramedia, 2004
 Buku Teks
Simpson, Leanne, 1971-
As we have always done : indigenous freedom through radical resistance
University of Minnesota Press, 2017
 Buku Teks