Motorola Inc., 1989
Buku Referensi
Schildt, Herbert, author
McGraw-Hill, 1997
Buku Teks
Garrison, Catherine, author
Reading, Mass Addison-Wesley Publishing Co , 1989
Buku Teks
Van Duyn, Julia, author
Reston Publishing Company, Inc ., 1975
Buku Teks
Van Duyn, Julia, author
Reston Publishing Company, Inc ., 1975
Buku Teks