Bortolotti, Lisa, author
Polity Press, 2008
Buku Teks
Bryan, Jeff C., author
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Riban, David M., author
McGraw-Hill, 1982
Buku Teks
Meadows, P.S., author
John Wiley & Sons, 1988
Buku Teks
Callister, William D., Jr., 1940-, author
John Wiley & Sons, 2000
Buku Teks