Mohammad Hamsal, author
Management Research Center Graduate School of Management FEUI, 2007
Artikel Jurnal
Roth, Aleda V
Bank Administration Institute , 1990
Buku Teks
Fariz Rahmanto, author
Universitas Indonesia, 2016
UI - Skripsi (Membership)
B. S. Chlepner
The Bookings Institution, 1943
Buku Teks
Reed, Edward Wilson, 1913-, author
Prentice-Hall, 1989
Buku Teks