APA (7th ed.) Citation

Koch, G., & Klueting, H. (2015). Köln. Religion in Geschichte und Gegenwart online. doi:10.1163/2405-8262_rgg4_COM_11935

Chicago Style (17th ed.) Citation

Koch, G., and H. Klueting. "Köln." Religion in Geschichte Und Gegenwart Online 2015, https://doi.org/10.1163/2405-8262_rgg4_COM_11935.

MLA (8th ed.) Citation

Koch, G., and H. Klueting. "Köln." Religion in Geschichte Und Gegenwart Online, 2015, https://doi.org/10.1163/2405-8262_rgg4_COM_11935.

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