Montgomery, Douglas C.
John Wiley & Sons, 2004
Buku Teks
Berenson, Mark L.
Prentice-Hall, 1988
Buku Teks
Venables, W.N.
Springer-Verlag, 1994
Buku Teks
Fleming, Michael C.
Rouledge, 1994
Buku Teks
Mills, Richard L.
McGraw-Hill Kogakusha, 1977
Buku Teks