APA (7th ed.) Citation

Mueller, A., & Klein, E. Felix der Pinguin. Kinderbuchverlag.

Chicago Style (17th ed.) Citation

Mueller, Andre, and Erika Klein. Felix Der Pinguin. Berlin: Kinderbuchverlag.

MLA (8th ed.) Citation

Mueller, Andre, and Erika Klein. Felix Der Pinguin. Kinderbuchverlag.

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