Katz, Harry C., author
McGraw-Hill, 2003
Buku Teks
Dilts, David A., author
McGraw-Hill, Irwin, 2007
Buku Teks
Carrell, Michael R., author
Prentice-Hall, 2001
Buku Teks
Prasow, Paul, author
McGraw-Hill, 1983
Buku Teks
Prasow, Paul, author
McGraw-Hill , 1970
Buku Teks