APA (7th ed.) Citation

Umbreit, P. (1931). Graßmann, Peter ([Electronic ed.].).

Chicago Style (17th ed.) Citation

Umbreit, Paul. Graßmann, Peter. [Electronic ed.]. 1931.

MLA (9th ed.) Citation

Umbreit, Paul. Graßmann, Peter. [Electronic ed.]. 1931.

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