Fisher, Cynthia D., author

Houghton Mifflin, 1990

 Buku Teks

Raymond A. Noe

McGraw-Hillm, 2006

 Buku Teks

Noe, Raymond A.

McGraw-Hill, 2003

 Multimedia

Greer, Charles R., author

Prentice-Hall, 2001

 Buku Teks

Ohtaki, Reiji, author

John Wiley and Sons(ASIA), 2005

 Buku Teks