APA (7th ed.) Citation

Voss-Gerling, W. (1983). Nordrhein-Westfalen (8. Aufl.). Polyglott-Verl.

Chicago Style (17th ed.) Citation

Voss-Gerling, Wilhelm. Nordrhein-Westfalen. 8. Aufl. München: Polyglott-Verl, 1983.

MLA (9th ed.) Citation

Voss-Gerling, Wilhelm. Nordrhein-Westfalen. 8. Aufl. Polyglott-Verl, 1983.

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