APA (7th ed.) Citation

Vogts, H. (1940). Unkel. Schwann.

Chicago Style (17th ed.) Citation

Vogts, Hans. Unkel. Düsseldorf: Schwann, 1940.

MLA (9th ed.) Citation

Vogts, Hans. Unkel. Schwann, 1940.

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