Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1985
UI - Skripsi (Membership)
Lumbantobing, Bahal Ichsan Partungkoan, author
1989
UI - Skripsi (Membership)
Zulkifli Amsyah, author
Buku Teks
McLeod, Raymond, author
Indeks, 2001
Buku Teks
McLeod, Raymond, author
Prenhallindo, 1995
Buku Teks