Sinaga, Marsen B., author
Universitas Indonesia, 2004
UI - Skripsi (Membership)
Hartono Widodo, author
Rajawali, 1992
Buku Teks
Hartono Widodo, author
Rajawali, 1989
Buku Teks
Panggabean, Darwin, author
Universitas Indonesia, 2006
UI - Skripsi (Membership)
Universitas Indonesia, 1998
UI - Skripsi (Membership)