APA (7th ed.) Citation

Schmitt, F., Fricke, G., & Schmitt, F. (1949). 750 - 1450. Athenäum-Verl.

Chicago Style (17th ed.) Citation

Schmitt, Fritz, Gerhard Fricke, and Fritz Schmitt. 750 - 1450. Bonn: Athenäum-Verl, 1949.

MLA (8th ed.) Citation

Schmitt, Fritz, et al. 750 - 1450. Athenäum-Verl, 1949.

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