Buku Teks
Keenan, Charles W., author
[publisher not identified], [date of publication not identified]
Buku Teks
Keenan, Charles W., author
Erlangga, 1992
Buku Teks
Keenan, Charles W., author
Erlangga, 1996
Buku Teks
Charles, Keenan W.
Erlangga, 1992
Buku Teks