APA (7th ed.) Citation

ADA & Kahlen, W. (1975). Wolf Kahlen ADA2 Schule. [NBK].

Chicago Style (17th ed.) Citation

ADA and Wolf Kahlen. Wolf Kahlen ADA2 Schule. [Berlin]: [NBK], 1975.

MLA (8th ed.) Citation

ADA and Wolf Kahlen. Wolf Kahlen ADA2 Schule. [NBK], 1975.

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