Harahap, Harief, author
P.T. Isabelia Brothers, 1973
Buku Teks
Ahmad Yani, author
Konstitusi Press, 2013
Buku Teks
Harahap, Harief, author
Yayasan Tridaya Pusat, 1973
Buku Teks
Harahap, Harief, author
Pradnya Paramita, 1977
Buku Teks
Harahap, Harief, author
Isabella Brothers, 1978
Buku Teks