APA (7th ed.) Citation

Knopp, K. K. Wortschatz - training fur oberstufe. Nicolas Vlachos Verlag.

Chicago Style (17th ed.) Citation

Knopp, Klaus K. Wortschatz - Training Fur Oberstufe. Athens: Nicolas Vlachos Verlag.

MLA (8th ed.) Citation

Knopp, Klaus K. Wortschatz - Training Fur Oberstufe. Nicolas Vlachos Verlag.

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