Roberts. (2009). The art of war: Great commanders of the modern world. Quercus.
Chicago Style (17th ed.) CitationRoberts. The Art of War: Great Commanders of the Modern World. London: Quercus, 2009.
MLA (8th ed.) CitationRoberts. The Art of War: Great Commanders of the Modern World. Quercus, 2009.
Warning: These citations may not always be 100% accurate.