The ethical basis of econmoic freedom
edited by Ivan Hill
Frederick A. Praeger, 1980
 Buku Teks SO
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 SO
Nelson, Julie A.
Economics for humans
University of Chicago Press, 2006
 Buku Teks SO
Primate ecology and conservation
edited by James G. Else and Phyllis C. Lee
Cambridge University Press, 1986
 Buku Teks