APA (7th ed.) Citation

Zimmermann, R. (1881). Ueber substituirte Harnstoffe. Universität Zürich.

Chicago Style (17th ed.) Citation

Zimmermann, Robert. Ueber Substituirte Harnstoffe. Switzerland: Universität Zürich, 1881.

MLA (8th ed.) Citation

Zimmermann, Robert. Ueber Substituirte Harnstoffe. Universität Zürich, 1881.

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