Knox, David M.
McGraw-Hill, 1990
Buku Teks SO
Cissell, Robert
Houghton Mifflin, 1969
Buku Teks SO
Shao, Stephen P.
South-Western Publishing, 1990
Buku Teks SO
Butterworth-Heinemann, 2013
eBooks
Lucking, Richard C.
John Wiley & Sons, 1980
Buku Teks SO