Christina Octavia, author
Universitas Indonesia, 2012
UI - Tesis (Open)
Printono, author
Dua-R, 1961
Buku Teks
Iman Soetignyo, author
Gajah Mada University Press, 1994
Buku Teks
Peranginangin, Effendi, author
RajaGrafindo Persada, 1994
Buku Teks
Purba, Riduan, author
Fakultas Eknonomi dan Bisnis Universitas Indonesia, 2010
UI - Tesis (Open)