APA (7th ed.) Citation

(1988). WordPerfect for IBM personal computers, version 5.0. Perfect Bound Pub. & Trading.

Chicago Style (17th ed.) Citation

WordPerfect for IBM Personal Computers, Version 5.0. Quezon City: Perfect Bound Pub. & Trading, 1988.

MLA (9th ed.) Citation

WordPerfect for IBM Personal Computers, Version 5.0. Perfect Bound Pub. & Trading, 1988.

Warning: These citations may not always be 100% accurate.