APA (7th ed.) Citation

Honnef, K. (1971). 20 [Zwanzig] Deutsche.

Chicago Style (17th ed.) Citation

Honnef, KLaus. 20 [Zwanzig] Deutsche. Berlin, 1971.

MLA (8th ed.) Citation

Honnef, KLaus. 20 [Zwanzig] Deutsche. 1971.

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