Cerami, Charles A.
Prentice-Hall, 1957
Buku Teks
Dromey, R.G.
Prentice-Hall International, 1982
Buku Teks SO
by Daniel L. Jensen ... [et al.]
McGraw-Hill, 1994
Buku Teks
Fischer, Paul M.
South-Western College, 1995
Buku Teks
Floyd Beams
Pearson Education, 2009
Buku Teks