APA (7th ed.) Citation

Kupfer, C., & Beyer, P. (1981). Naumburg (2. Auflage.). Brockhaus.

Chicago Style (17th ed.) Citation

Kupfer, Christian, and Paul Beyer. Naumburg. 2. Auflage. Leipzig: Brockhaus, 1981.

MLA (8th ed.) Citation

Kupfer, Christian, and Paul Beyer. Naumburg. 2. Auflage. Brockhaus, 1981.

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