Vecchio, Robert P., author
Dryden Press, 1995
Buku Teks
Kreitner, Robert, author
McGraw-Hill, 2010
Buku Teks
Luthans, Fred, author
McGraw-Hill , 1985
Buku Teks
Luthans, Fred, author
McGraw-Hill , 1981
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 2009
Buku Teks