Brown, RObert Wade, editor-in-chief
McGraw-Hill, 2001
Buku Referensi
Bowles, Joseph E., author
McGraw-Hill, 1977
Buku Teks
Zeevaert, Leonardo
Van Nostrand, 1973
Buku Teks
Bowles, Joseph E., author
Erlangga, 1988
Buku Teks
Bowles, Joseph E., author
Erlangga, 1983
Buku Teks