Moorhead, Gregory, author
South-Western Cengage Learning, 2012
Buku Teks
Schermerhorn, John R., author
John Wiley & Sons, 1991
Buku Teks
George, Jennifer M., author
Prentice Hall,, 2002
Buku Teks
Griffin, Ricky W., author
Cengage Learning, 2014
Buku Teks
Knudson, Harry R., author
Winthrop, 1978
Buku Teks