APA (7th ed.) Citation

Mayer, S., & Künzel, C. (2011). "Wahnsinnig glücklich!": ... Sophie Mayer.

Chicago Style (17th ed.) Citation

Mayer, Sophie, and Cosima Künzel. "Wahnsinnig Glücklich!": ... Sophie Mayer. 2011.

MLA (9th ed.) Citation

Mayer, Sophie, and Cosima Künzel. "Wahnsinnig Glücklich!": ... Sophie Mayer. 2011.

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