Jeong, Seon Yong, author
PT Gramedia Pustaka Utama, 2022
Buku Teks
Limbong, Bernhard, author
Margaretha Pustaka, 2011
Buku Teks
Krisno Aji, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2003
UI - Tesis (Membership)
Sudarmin
CV Genep Jaya Baru, 1982
Buku Teks
Lorenz, Christopher, author
Gramedia, 2000
Buku Teks