Bowker, 1992
Buku Teks
Wiggins, Gary, 1943-, author
McGraw-Hill, 1991
Buku Teks
Maizell, Robert E., author
John Wiley & Sons, 1987
Buku Teks
Wolman, Yecheskel, author
John Wiley & Sons, 1983
Buku Teks
editors, L.T. Morton, S. Godbolt
Butterworth, 1984
Buku Referensi