Schibli, Hermann S. "The Philosophy of Hierocles." Hierocles of Alexandria. : Oxford University Press, 2002-06-13. Oxford Scholarship Online. 2010-01-01. Date Accessed 23 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199249213.001.0001/acprof-9780199249213-chapter-2>.
Schibli, H.(2002-06-13). The Philosophy of Hierocles. In Hierocles of Alexandria. : Oxford University Press. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199249213.001.0001/acprof-9780199249213-chapter-2.
Schibli, Hermann S. "The Philosophy of Hierocles." In Hierocles of Alexandria. : Oxford University Press, 2002-06-13. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199249213.001.0001/acprof-9780199249213-chapter-2.
Schibli HS. The Philosophy of Hierocles. In: Schibli HS. Hierocles of Alexandria. Oxford University Press; 2002. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199249213.001.0001/acprof-9780199249213-chapter-2. Accessed May 23, 2013.