Norton, Robert L., author
McGraw-Hill, 1992
Buku Teks
Juvinall, Robert C.
John Wiley & Sons, c1991
Buku Teks
Wilson, Charles E., author
Prentice-Hall, 1997
Buku Teks
Universitas Indonesia, 2007
UI - Skripsi (Membership)
Spotts, M.F. (Merhyle Franklin), author
Prentice-Hall, 1985
Buku Teks