Dwyer, F. Robert, author
McGraw-Hill, 2002
Buku Teks
Dwyer, F. Robert, author
McGraw-Hill, 2009
Buku Teks
Ferrell, O.C., author
Thomson South-Western, 2008
Buku Teks
Morse, Stephen A., author
Crest Publishing House, 2001
Buku Teks
Farbey, A.D., author
Crest Publishing House, 2001
Buku Teks