APA (7th ed.) Citation

(1951). Colloquium geographicum. Ferger.

Chicago Style (17th ed.) Citation

Colloquium Geographicum. Bergisch-Gladbach: Ferger, 1951.

MLA (9th ed.) Citation

Colloquium Geographicum. Ferger, 1951.

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