APA (7th ed.) Citation

Geers, W. Datenverarbeitung, Excel 7.0 - Access 7.0 - Word 7.0. Heckner.

Chicago Style (17th ed.) Citation

Geers, Werner. Datenverarbeitung, Excel 7.0 - Access 7.0 - Word 7.0. Wolfenbüttel: Heckner.

MLA (9th ed.) Citation

Geers, Werner. Datenverarbeitung, Excel 7.0 - Access 7.0 - Word 7.0. Heckner.

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