Situmorang, Sahala Tua Paulus, author
Universitas Indonesia, 1995
UI - Skripsi (Membership)
Simanjuntak, Rotua Ratna, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1994
UI - Skripsi (Membership)
Yesi Mutia Basri, author
Universitas Riau, Fakultas Ekonomi, 2013
Artikel Jurnal
Faridz Akhmad Mauludin, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2012
UI - Skripsi (Open)
Triana Saputro, author
1994
UI - Tesis (Membership)