Harahap, M. Yahya, author
[publisher not identified], 1987
Buku Teks
Harahap, M. Yahya, author
[publisher not identified], 1987
Buku Teks
Manurung, Tanti Adriani, author
Universitas Indonesia, 1988
UI - Skripsi (Membership)
Universitas Indonesia, 1989
UI - Skripsi (Membership)
Abdul Manan, author
Kencana Prenada Media Group, 2008
Buku Teks