Seuren, Pieter A. M. "Aristotle, the commentators, and Abelard." The Logic of Language: Language From Within Volume II. : Oxford University Press, 2009-10-29. Oxford Scholarship Online. 2010-02-01. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199559480.001.0001/acprof-9780199559480-chapter-5>.
Seuren, P.(2009-10-29). Aristotle, the commentators, and Abelard. In The Logic of Language: Language From Within Volume II. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199559480.001.0001/acprof-9780199559480-chapter-5.
Seuren, Pieter A. M. "Aristotle, the commentators, and Abelard." In The Logic of Language: Language From Within Volume II. : Oxford University Press, 2009-10-29. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199559480.001.0001/acprof-9780199559480-chapter-5.
Seuren PAM. Aristotle, the commentators, and Abelard. In: Seuren PAM. The Logic of Language: Language From Within Volume II. Oxford University Press; 2009. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199559480.001.0001/acprof-9780199559480-chapter-5. Accessed May 22, 2013.