Arrum Dyah Aprilriana, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2018
UI - Tesis (Membership)
Silalahi, Sahat, author
Fakultas Teknik Universitas Indonesia, 1995
UI - Skripsi (Membership)
Aditya MEdia, 1997
Buku Teks
Yuji, Genda, author
International House Japan, 2005
Buku Teks
Wa Ode Nartin Hamundu, author
2017
UI - Tesis (Membership)