Duggan, A. L. (1963). The story of the Crusades, 1097-1291: With drawings. Pantheon Books.
Citazione stile Chigago Style (17a edizione)Duggan, Alfred Leo. The Story of the Crusades, 1097-1291: With Drawings. New York: Pantheon Books, 1963.
Citatione MLA (9a ed.)Duggan, Alfred Leo. The Story of the Crusades, 1097-1291: With Drawings. Pantheon Books, 1963.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.