Stern, Robert A., author
John Wiley & Sons, 1982
Buku Teks
Stern, Robert A., author
John Wiley, 1973
Buku Teks
Popkin, Gary S., author
Mifflin Company, 1981
Buku Teks
Crawford, F. Robert, author
Prentice-Hall, 1973
Buku Teks
Kuc, Roman, author
McGraw-Hill, 1988
Buku Teks