APA (7th ed.) Citation

Urhahn, J. M., & Wenz-Vietor, E. I. Rhein-Ruhr-Fibel. Schwamm.

Chicago Style (17th ed.) Citation

Urhahn, Joseph Mitwirkende, and Else Illustrator*in Wenz-Vietor. Rhein-Ruhr-Fibel. Düsseldorf: Schwamm.

MLA (8th ed.) Citation

Urhahn, Joseph Mitwirkende, and Else Illustrator*in Wenz-Vietor. Rhein-Ruhr-Fibel. Schwamm.

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