Obay Haqi Rifan Arief
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2022
UI - Skripsi (Membership)
Guetzkow, Harold
Prentice-Hall, 1972
Buku Teks
Smith, Jerald R.
Prentice-Hall, 2002
Buku Teks
Osgood, Cornelius
The University of Arizona Press, 1975
Buku Teks
Lo, Stefan H.C.
McGraw-Hill, 2012
Buku Teks