APA (7th ed.) Citation

Göckel, H. (1993). WordPerfect 6.0. Hüthig.

Chicago Style (17th ed.) Citation

Göckel, Harald. WordPerfect 6.0. Heidelberg: Hüthig, 1993.

MLA (9th ed.) Citation

Göckel, Harald. WordPerfect 6.0. Hüthig, 1993.

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