APA (7th ed.) Citation

Althöfer, H., & Bulk, C. (2002). Informel. Harenberg Ed..

Chicago Style (17th ed.) Citation

Althöfer, Heinz, and Claudia Bulk. Informel. Dortmund: Harenberg Ed., 2002.

MLA (8th ed.) Citation

Althöfer, Heinz, and Claudia Bulk. Informel. Harenberg Ed., 2002.

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