Woody, Robert Henley, author
Jossey-Bass, 1989
Buku Teks
Quelch, John A., author
Prentice-Hall, 2001
Buku Teks
Hutt, Michael D., author
South Western Cengage Learning, 2013
Buku Teks
Hilton, Ronald W., author
McGraw-Hill , 1998
Buku Teks
Hilton, Ronald W., author
McGraw-Hill, 2003
Buku Teks