Callister, William D., Jr., 1940-, author
John Wiley & Sons, 2003
Buku Teks
Schlenker, B.R., author
John Wiley & Sons, 1969
Buku Teks
Shackelford, James F., author
Macmillan Press, 1990
Buku Teks
Sirvarajan, V.
Bangalore: V.K. Publisher, 1980
Buku Teks
Shackelford, James F., author
Pearson-Prentice Hall, 2005
Buku Teks