APA (7th ed.) Citation

Ehrenburg, G. u. 1. (1842). Ueber Pneumothorax. Zürn.

Chicago Style (17th ed.) Citation

Ehrenburg, G. um 1842. Ueber Pneumothorax. Würzburg: Zürn, 1842.

MLA (9th ed.) Citation

Ehrenburg, G. um 1842. Ueber Pneumothorax. Zürn, 1842.

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