Greek Prepositions: From Antiquity to the Present. : Oxford University Press, 2010-04-29. Oxford Scholarship Online. 2010-05-01. Date Accessed 24 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199556854.001.0001/acprof-9780199556854>.
(2010-04-29). Greek Prepositions: From Antiquity to the Present. : Oxford University Press. Retrieved 24 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199556854.001.0001/acprof-9780199556854.
Greek Prepositions: From Antiquity to the Present. : Oxford University Press, 2010-04-29. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199556854.001.0001/acprof-9780199556854.
Bortone P. Greek Prepositions: From Antiquity to the Present. Oxford University Press; 2010. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199556854.001.0001/acprof-9780199556854. Accessed May 24, 2013.