APA (7th ed.) Citation

Heil, B., & Sinzel, A. (2000). Briefe an Karl Ernst Osthaus.

Chicago Style (17th ed.) Citation

Heil, Bettina, and Andrea Sinzel. Briefe an Karl Ernst Osthaus. Hagen, 2000.

MLA (8th ed.) Citation

Heil, Bettina, and Andrea Sinzel. Briefe an Karl Ernst Osthaus. 2000.

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