APA (7th ed.) Citation

Nicolai, E. A., & Wilhelmi, C. A. (1790). De urina nigra.

Chicago Style (17th ed.) Citation

Nicolai, Ernst Anton, and Christian A. Wilhelmi. De Urina Nigra. Jenae, 1790.

MLA (9th ed.) Citation

Nicolai, Ernst Anton, and Christian A. Wilhelmi. De Urina Nigra. 1790.

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