APA (7th ed.) Citation

(1979). Generalkarte Rhein-Ruhr. Mairs.

Chicago Style (17th ed.) Citation

Generalkarte Rhein-Ruhr. Stuttgart: Mairs, 1979.

MLA (9th ed.) Citation

Generalkarte Rhein-Ruhr. Mairs, 1979.

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