APA (7th ed.) Citation

Sproemberg, H. (1940). Niederlothringen, Flandern und Friesland (Sonderdr.).

Chicago Style (17th ed.) Citation

Sproemberg, Heinrich. Niederlothringen, Flandern Und Friesland. Sonderdr. 1940.

MLA (9th ed.) Citation

Sproemberg, Heinrich. Niederlothringen, Flandern Und Friesland. Sonderdr. 1940.

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