Karmon, David. "Inventing a Preservation Program in Fifteenth-Century Rome." The Ruin of the Eternal City: Antiquity and Preservation in Renaissance Rome. : Oxford University Press, 2011-04-29. Oxford Scholarship Online. 2011-09-22. Date Accessed 24 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199766895.001.0001/acprof-9780199766895-chapter-2>.
Karmon, D.(2011-04-29). Inventing a Preservation Program in Fifteenth-Century Rome. In The Ruin of the Eternal City: Antiquity and Preservation in Renaissance Rome. : Oxford University Press. Retrieved 24 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199766895.001.0001/acprof-9780199766895-chapter-2.
Karmon, David. "Inventing a Preservation Program in Fifteenth-Century Rome." In The Ruin of the Eternal City: Antiquity and Preservation in Renaissance Rome. : Oxford University Press, 2011-04-29. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199766895.001.0001/acprof-9780199766895-chapter-2.
Karmon D. Inventing a Preservation Program in Fifteenth-Century Rome. In: Karmon D. The Ruin of the Eternal City: Antiquity and Preservation in Renaissance Rome. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199766895.001.0001/acprof-9780199766895-chapter-2. Accessed May 24, 2013.