Duggan, A. (2000). Nobles and nobility in medieval Europe: Concepts, origins, transformations. Boydell Press.
芝加哥风格引文Duggan, Anne. Nobles and Nobility in Medieval Europe: Concepts, Origins, Transformations. Woodbridge, Suffolk ; Rochester, N.Y.: Boydell Press, 2000.
MLA引文Duggan, Anne. Nobles and Nobility in Medieval Europe: Concepts, Origins, Transformations. Boydell Press, 2000.
警告：这些引文格式不一定是100％准确.