APA (7th ed.) Citation

Schmid, H., & Kraas, F. (2009). Megastädte. Praxis Geographie.

Chicago Style (17th ed.) Citation

Schmid, Heiko, and Frauke Kraas. "Megastädte." Praxis Geographie 2009.

MLA (9th ed.) Citation

Schmid, Heiko, and Frauke Kraas. "Megastädte." Praxis Geographie, 2009.

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