APA (7th ed.) Citation

(1939). The Danube basin. At the Clarendon Pr..

Chicago Style (17th ed.) Citation

The Danube Basin. At the Clarendon Pr., 1939.

MLA (8th ed.) Citation

The Danube Basin. At the Clarendon Pr., 1939.

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