Teicholz, Eric
McGraw-Hill, 1992
Buku Teks
Ganesh Aji Wicaksono
2012
UI - Skripsi (Open)
Ikeda, Daisaku, 1928-
UI-Press, 2009
UI - Pidato
Rasmussen, A. Eric
Co-operative College of Canada, 1975
Buku Teks
Shinta Fitrianti
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis (Membership)