APA (7th ed.) Citation

(1991). NLP (4. Aufl.). GABAL.

Chicago Style (17th ed.) Citation

NLP. 4. Aufl. Speyer: GABAL, 1991.

MLA (9th ed.) Citation

NLP. 4. Aufl. GABAL, 1991.

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