APA (7th ed.) Citation

Göckel, H. (1989). WordPerfect 5.0. Hüthig.

Chicago Style (17th ed.) Citation

Göckel, Harald. WordPerfect 5.0. Heidelberg: Hüthig, 1989.

MLA (8th ed.) Citation

Göckel, Harald. WordPerfect 5.0. Hüthig, 1989.

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