Boyd, Harper W., Jr., author
Erlangga, 2000
Buku Teks
Assuri, Sofjan
Rajawali, 1988
Buku Teks
Sofjan Assauri, author
[publisher not identified], [date of publication not identified]
Buku Teks
Buchari Alma, author
Alfabeta, 2007
Buku Teks
Keegan, Warren J., author
Prenhallindo, 1996
Buku Teks