Smith, Jerald R., author
Prentice-Hall, 2002
Buku Teks
Dess, Gregory G., author
McGraw-Hill/Irwin, 2005
Buku Teks
Bowman, Cliff, author
Prentice-Hall, 1990
Buku Teks
Allen, David, author
Crest Publishing House, 2002
Buku Teks
Pearce, John A., author
McGraw-Hill, 2009
Buku Teks