Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1985
UI - Skripsi (Membership)
Triwanli, author
Universitas Indonesia, 1993
UI - Skripsi (Membership)
Nila Karula, author
Universitas Indonesia, 2000
UI - Skripsi (Membership)
Y. Sri Pudyatmoko, author
Universitas Atma Jaya, 1996
Buku Teks
Lumbantoruan, Delko Edison, author
Fakultas Teknik Universitas Indonesia, 1999
UI - Skripsi (Membership)