Valberg, Dale
Erlangga, 2007
Buku Teks SO
Purcell, Edwin Joseph, 1901-
Erlangga, 1998
Buku Teks SO
Larson, Ron, 1941-
D.C. Heath, 1990
Buku Teks SO
Edwards, C.H.
Prentice-Hall, 1982
Buku Teks SO
Purcell, Edwin Joseph, 1901-
Erlangga, 1999
Buku Teks SO