Dalrymple, Douglas J., author
Chichester : Wiley, Chichester : Wiley
Buku Teks
Parsons, Patricia J., author
Erlangga, 2004
Buku Teks
Peter, J. Paul, author
McGraw-Hill, 2004
Buku Teks
McQuaig, Douglas J.
Houghton Mifflin, 1989
Buku Teks
Boyd, Harper W., Jr., author
New York, N.Y. , Harcourt Brace Jovanovich
Buku Teks