APA (7th ed.) Citation

Que Corporation. (1989). Using WordPerfect 5.1 (Special ed.). Perfect Bound Pub.

Chicago Style (17th ed.) Citation

Que Corporation. Using WordPerfect 5.1. Special ed. Quezon City: Perfect Bound Pub, 1989.

MLA (9th ed.) Citation

Que Corporation. Using WordPerfect 5.1. Special ed. Perfect Bound Pub, 1989.

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