APA (7th ed.) Citation

Gill, J. H. (2008). 1809 Thunder on the Danube: Napoleon's defeat of the Habsburgs. Frontline books.

Chicago Style (17th ed.) Citation

Gill, John H. 1809 Thunder on the Danube: Napoleon's Defeat of the Habsburgs. London: Frontline books, 2008.

MLA (9th ed.) Citation

Gill, John H. 1809 Thunder on the Danube: Napoleon's Defeat of the Habsburgs. Frontline books, 2008.

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