APA Style
Wordperfect For IMB Personal Computers. (1988).
USE:
WordPerfect Corporation.
Chicago Style
Wordperfect For IMB Personal Computers.
.
USE:
WordPerfect Corporation,
1988.
Text.
MLA Style
Wordperfect For IMB Personal Computers.
.
USE:
WordPerfect Corporation,
1988.
Text.
Turabian Style
Wordperfect For IMB Personal Computers.
USE:
WordPerfect Corporation,
1988.
Print.