Anderson, Daniel
Brooks/Cole, 1999
Buku Teks SO
Wheeler, Ruric E.
John Wiley & Sons, 1996
Buku Teks SO
Zehna, Peter W.
Prentice-Hall, 1982
Buku Teks SO
Varberg, Dale E.
Pearson/Prentice-Hall, 2007
Buku Teks
Finney, Ross L.
Addison-Wesley, 1994
Buku Teks SO