Nyhoff, Larry, author
Prentice-Hall, 1997
Buku Teks
Nolan, Richard L., author
Addison-Wesley, 1971
Buku Teks
McCracken, Daniel D., author
John Wiley & Sons, 1974
Buku Referensi
Etter, Delores M. (Delores Maria), 1947-, author
Bina Aksara, 1989
Buku Teks
Davis, Gordon B., author
McGraw-Hill, 1988
Buku Teks