Higginbotham, James. "On Events in Linguistic Semantics." Tense, Aspect, and Indexicality. : Oxford University Press, 2009-11-29. Oxford Scholarship Online. 2010-05-01. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239313.001.0001/acprof-9780199239313-chapter-2>.
Higginbotham, J.(2009-11-29). On Events in Linguistic Semantics. In Tense, Aspect, and Indexicality. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239313.001.0001/acprof-9780199239313-chapter-2.
Higginbotham, James. "On Events in Linguistic Semantics." In Tense, Aspect, and Indexicality. : Oxford University Press, 2009-11-29. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239313.001.0001/acprof-9780199239313-chapter-2.
Higginbotham J. On Events in Linguistic Semantics. In: Higginbotham J. Tense, Aspect, and Indexicality. Oxford University Press; 2009. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199239313.001.0001/acprof-9780199239313-chapter-2. Accessed May 22, 2013.