Maddock, R. J.
Longman Scientific & Technical, 1988
Buku Teks
Lang, Tran Tien, author
John Wiley & Sons, 1987
Buku Teks
edited by Howard Bierman
McGraw-Hill, 1983
Buku Teks
Mitchell, F. H., author
Prentice-Hall, 1992
Buku Teks
Horowitz, Paul, author
Cambridge University Press, 1980.
Buku Teks