APA (7th ed.) Citation

Popp, M. (2014). Offener Unterricht. Leitfaden Schulpraxis.

Chicago Style (17th ed.) Citation

Popp, Markus. "Offener Unterricht." Leitfaden Schulpraxis 2014.

MLA (9th ed.) Citation

Popp, Markus. "Offener Unterricht." Leitfaden Schulpraxis, 2014.

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