* The Emperor's Wife: The Life and Times of Maria Theresa (2009): This is her most well-known work, a biography of Maria Theresa, Empress of Austria. It won the Duff Cooper Prize for biography.
* The Romanoffs: The Story of a Dynasty (2015): A sweeping and informative account of the Romanovs, the last imperial dynasty of Russia.
* The Serpent and the Eagle: The Rise and Fall of the Roman Empire (2020): This book explores the relationship between Rome and Persia, two powerful empires that clashed for centuries.
Beyond these major works, de Jonge has also written articles for various publications and contributed to television documentaries.