APA (7th ed.) Citation

(1993). The river Danube of Europe: Its problems and prospects. NVK Internat.

Chicago Style (17th ed.) Citation

The River Danube of Europe: Its Problems and Prospects. Bratislava: NVK Internat, 1993.

MLA (9th ed.) Citation

The River Danube of Europe: Its Problems and Prospects. NVK Internat, 1993.

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