Finn Op, Richard. "Almsgiving by Monks and Lay Christians." Almsgiving in the Later Roman Empire: Christian Promotion and Practice 313-450. : Oxford University Press, 2006-02-23. Oxford Scholarship Online. 2007-09-01. Date Accessed 24 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199283606.001.0001/acprof-9780199283606-chapter-3>.
Finn Op, R.(2006-02-23). Almsgiving by Monks and Lay Christians. In Almsgiving in the Later Roman Empire: Christian Promotion and Practice 313-450. : Oxford University Press. Retrieved 24 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199283606.001.0001/acprof-9780199283606-chapter-3.
Finn Op, Richard. "Almsgiving by Monks and Lay Christians." In Almsgiving in the Later Roman Empire: Christian Promotion and Practice 313-450. : Oxford University Press, 2006-02-23. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199283606.001.0001/acprof-9780199283606-chapter-3.
Finn Op R. Almsgiving by Monks and Lay Christians. In: Finn OP R. Almsgiving in the Later Roman Empire: Christian Promotion and Practice 313-450. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199283606.001.0001/acprof-9780199283606-chapter-3. Accessed May 24, 2013.