Johansson, Johny K., author
Gramedia Pustaka Utama , 1998
Buku Teks
Dahringer, Lee D., author
Addison-Wesley, 1991
Buku Teks
Keegan, Warren J., author
Prentice-Hall, 1997
Buku Teks
Keegan, Warren J., author
Prentice-Hall, 1999
Buku Teks
Johansson, Johny K., author
Gramedia Pustaka Utama , 1998
Buku Teks