Sofjan Assauri, author
[publisher not identified], [date of publication not identified]
Buku Teks
McKenna, Regis
Pustaka Binaman Pressindo, 1996
Buku Teks
Cravens, David W., author
Erlangga, 1999
Buku Teks
Fandy Tjiptono, author
Andi, 2000
Buku Teks
Stanton, William J., author
Erlangga, 1996
Buku Teks