APA (7th ed.) Citation

Stadt Köln. (1991). Kölner Partnerstädte.

Chicago Style (17th ed.) Citation

Stadt Köln. Kölner Partnerstädte. Köln, 1991.

MLA (8th ed.) Citation

Stadt Köln. Kölner Partnerstädte. 1991.

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