APA (7th ed.) Citation

Hahner, M. (1988). WordPerfect. Data Becker.

Chicago Style (17th ed.) Citation

Hahner, Markus. WordPerfect. Düsseldorf: Data Becker, 1988.

MLA (9th ed.) Citation

Hahner, Markus. WordPerfect. Data Becker, 1988.

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