Silaen, Rein Ronald, author
Universitas Indonesia, 1994
UI - Skripsi (Membership)
Batubara, Mohammad Isfan, author
2019
UI - Skripsi (Membership)
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1990
UI - Skripsi (Membership)
Sompie, Glenn J., author
1987
UI - Skripsi (Membership)
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2001
UI - Skripsi (Membership)