Young, Margaret Levine, author
IDG Books Wordwide, 1993
Buku Teks
Stephen Harris, Virginia Andrerson, Glen Banner, Valerie Bloch, Barbara Bouton, Forrest Haouletts, Anthony Keller, April D. Sessions, Dan L. Sessions, Rob Tidroew, editor
NRP, 1993
Buku Referensi
McClure, Rhyder, author
Brady, 1990
Buku Teks
Christopher, author
Dinastindo, 1992
Buku Teks
WordPerfect Corporation, 1992
Buku Referensi