APA (7th ed.) Citation

Fries, E. (1970). Forschender Unterricht.

Chicago Style (17th ed.) Citation

Fries, Eberhard. Forschender Unterricht. 1970.

MLA (9th ed.) Citation

Fries, Eberhard. Forschender Unterricht. 1970.

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