Flippo, Edwin B., author
Erlangga, 1990
Buku Teks
Flippo, Edwin B., author
Erlangga, 1990
Buku Teks
Manullang, M., author
[publisher not identified], [year of publication not identified]
Buku Teks
A.A. Anwar Prabu Mangkunegara
Remaja Rosdakarya, 2005
Buku Teks
Sinambela, Lijan Poltak, author
Bumi Aksara, 2016
Buku Teks