Marpaung, Leden, author
Gramedia Pustaka Utama, 1991
Buku Teks
Marpaung, Leden, author
Gramedia Pustaka Utama, 1991
Buku Teks
Ririhena, Pieter, author
Fakultas Hukum Universitas Indonesia, 1987
UI - Skripsi (Membership)
H.A.K. Mochamad Anwar, author
Bina Aksara, 1988
Buku Teks
Baharuddin Lopa, 1935-2001, author
Pradnya Paramita, 1980
Buku Teks