Ali Abdullah, author
Prenada Media Group, 2018
Buku Teks
Christine S.T. Kansil, author
Pradnya Paramita, 1991
Buku Teks
Pandiangan, Natalia, author
Universitas Indonesia, 1994
UI - Skripsi (Membership)
Ali Abdullah
Kencana Prenada Media Group, 2015
Buku Teks
Christine S.T. Kansil, author
Pradnya Paramita, 1988
Buku Teks