ARNOLD, BENJAMIN. "The Urban Milieu and Civic Status." Power and Property in Medieval Germany: Economic and Social Change c.900-1300. : Oxford University Press, 2004-09-30. Oxford Scholarship Online. 2010-01-01. Date Accessed 19 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199272211.001.0001/acprof-9780199272211-chapter-5>.
ARNOLD, B.(2004-09-30). The Urban Milieu and Civic Status. In Power and Property in Medieval Germany: Economic and Social Change c.900-1300. : Oxford University Press. Retrieved 19 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199272211.001.0001/acprof-9780199272211-chapter-5.
ARNOLD, BENJAMIN. "The Urban Milieu and Civic Status." In Power and Property in Medieval Germany: Economic and Social Change c.900-1300. : Oxford University Press, 2004-09-30. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199272211.001.0001/acprof-9780199272211-chapter-5.
ARNOLD B. The Urban Milieu and Civic Status. In: Arnold B. Power and Property in Medieval Germany: Economic and Social Change c.900-1300. Oxford University Press; 2004. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199272211.001.0001/acprof-9780199272211-chapter-5. Accessed June 19, 2013.