APA (7th ed.) Citation

Koch, G., & Klueting, H. (2001). Köln.

Chicago Style (17th ed.) Citation

Koch, Guntram, and Harm Klueting. Köln. 2001.

MLA (9th ed.) Citation

Koch, Guntram, and Harm Klueting. Köln. 2001.

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