Holt, R.C.
Addison-Wesley, 1983
Buku Teks
Holt, R.C., author
Adiso-Wesley Publishing Company, 1983
Buku Teks
Kay, Judy, author
Addison-Wesley, 1989
Buku Teks
Valley, John J., author
Sams, 1992
Buku Referensi
Johnson, Philip I., author
McGraw-Hill, 1985
Buku Teks