Wormald, Avison, author
Pan Books, 1973
Buku Teks
The Society of Business Administration, Kwansei Gakuin University, 2009
Majalah, Jurnal, Buletin
Griffin, Ricky W., author
Addison-Wesley, 1995
Buku Teks
Wild, John J., author
Prentice-Hall, 2003
Buku Teks
Mason, R. Hal (Robert Hal), 1929-, author
John Wiley & Sons, 1981
Buku Teks