APA (7th ed.) Citation

Unna, P. G., & Unna, P. (1923). Die Geschlechtskrankheiten. Schwabacher.

Chicago Style (17th ed.) Citation

Unna, Paul Gerson, and Paul Unna. Die Geschlechtskrankheiten. Berlin: Schwabacher, 1923.

MLA (9th ed.) Citation

Unna, Paul Gerson, and Paul Unna. Die Geschlechtskrankheiten. Schwabacher, 1923.

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