Gaya APA
The Norton utilities Manual version 4.0 & advanced edition. (1987).
Santa Monica:
Peter orton Computing.
Gaya Chicago
The Norton utilities Manual version 4.0 & advanced edition.
.
Santa Monica:
Peter orton Computing,
1987.
Text.
Gaya MLA
The Norton utilities Manual version 4.0 & advanced edition.
.
Santa Monica:
Peter orton Computing,
1987.
Text.
Gaya Turabian
The Norton utilities Manual version 4.0 & advanced edition.
Santa Monica:
Peter orton Computing,
1987.
Print.