Akil, Ferit, author
Islamic World Academic of Sciences, 2017
Artikel Jurnal
The Guilford Press, 1997
Buku Teks
Silalahi, Rachel Stefani Hafiz, author
Fakultas Ekonomi dan BIsnis Universitas Indonesia, 2023
UI - Skripsi (Membership)
Stevenson, Michael R., author
Westviev Press, 1996
Buku Teks
edited by Robert A. Goldwin and William A. Schambra
American Enterprise Institute for Public Policy Research, 1985
Buku Teks