Davis, Gordon B., author
Pustaka Binaman Pressindo, 1995
Buku Teks
Davis, Gordon B., author
Pustaka Binaman Pressindo, 1991
Buku Teks
Davis, Gordon B., author
Pustaka Binaman Pressindo, 1985
Buku Teks
Davis, Gordon B., author
PPM, 2002
Buku Teks
Murdick, Robert G., author
Erlangga , 1993
Buku Teks