Bruton, Leonard T.
Prentice-Hall, 1980.
Buku Teks
Schubert, Thomas F.
John Wiley & Sons, 1996
Buku Teks
Daryanani, Gobind, author
John Wiley & Sons, 1976
Buku Teks
Hilburn, John L., 1938-, author
McGraw-Hill, 1983
Buku Teks
Johnson, D.E., author
Prentice-Hall, 1980
Buku Referensi