Anton, Howard
John Wiley & Sons, 1984
Buku Teks SO
Anderson, Daniel
Brooks/Cole, 1999
Buku Teks SO
Varberg, Dale E.
Pearson/Prentice-Hall, 2007
Buku Teks
Bartle, Robert Gardner, 1927-
Scott, Foresman, 1968
Buku Teks SO
Sherwood, G.E.F.
Prentice-Hall, 1946
Buku Teks