Armstrong, Michael, author
Gramedia, 2003
Buku Teks
Harris, Michael
The Dryden Press , 1997
Buku Teks
Martocchio, Joseph J., author
Pearson Prentice Hall, 2009
Buku Teks
Megginson, David, author
Kogan Page, 1999
Buku Teks
Dessler, Gary, 1942-, author
Prentice-Hall, 2003
Buku Teks