APA (7th ed.) Citation

Wershoven, F. J. Useful knowledge. R. Gaertner.

Chicago Style (17th ed.) Citation

Wershoven, Franz Josef. Useful Knowledge. Berlin: R. Gaertner.

MLA (9th ed.) Citation

Wershoven, Franz Josef. Useful Knowledge. R. Gaertner.

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