APA (7th ed.) Citation

Roehrig, E. W. (1938). Momm-Duisburg.

Chicago Style (17th ed.) Citation

Roehrig, Ernst Walter. Momm-Duisburg. Essen, 1938.

MLA (9th ed.) Citation

Roehrig, Ernst Walter. Momm-Duisburg. 1938.

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