ebrary, Inc, & Classen, A. (2009). Urban space in the middle ages and the early modern age. Walter de Gruyter.
芝加哥风格引文ebrary, Inc, 与 Albrecht Classen. Urban Space in the Middle Ages and the Early Modern Age. Berlin ; New York: Walter de Gruyter, 2009.
MLA引文ebrary, Inc, 与 Albrecht Classen. Urban Space in the Middle Ages and the Early Modern Age. Walter de Gruyter, 2009.
警告：这些引文格式不一定是100％准确.