The ethical basis of econmoic freedom/ edited by Ivan Hill
Praeger , 1980
 Buku Teks
Albertus Bambang Supriyanto
Etika kehidupan: elaborasi moralitas religi pada olah raga pernafasan Mahatma = The Ethical of life: elaboration of religious morality in “olah Raga pernafasan Mahatma”
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2021
 UI - Tesis (Membership)
Morrison, John
This freedom
Penguin Books, 1985
 Buku Teks
Nelson, Julie A.
Economics for humans
University of Chicago Press, 2006
 Buku Teks
An introduction to primate conservation
edited by Serge A. Wich, Andrew J. Marshall
Oxford University Press, 2016
 eBooks