APA (7th ed.) Citation

Felix, 1. a., & Theo, 1. a. (1999). Elvis in Köln. Langenscheidt.

Chicago Style (17th ed.) Citation

Felix, 1959- autor, and 1973- autor Theo. Elvis in Köln. Berlin: Langenscheidt, 1999.

MLA (9th ed.) Citation

Felix, 1959- autor, and 1973- autor Theo. Elvis in Köln. Langenscheidt, 1999.

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