Langslow, David. "Lecture I, 40." Jacob Wackernagel, Lectures on Syntax: With Special Reference to Greek, Latin, and Germanic. : Oxford University Press, 2009-04-30. Oxford Scholarship Online. 2009-09-01. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198153023.001.0001/acprof-9780198153023-chapter-40>.
Langslow, D.(2009-04-30). Lecture I, 40. In Jacob Wackernagel, Lectures on Syntax: With Special Reference to Greek, Latin, and Germanic. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198153023.001.0001/acprof-9780198153023-chapter-40.
Langslow, David. "Lecture I, 40." In Jacob Wackernagel, Lectures on Syntax: With Special Reference to Greek, Latin, and Germanic. : Oxford University Press, 2009-04-30. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198153023.001.0001/acprof-9780198153023-chapter-40.
Langslow D. Lecture I, 40. In: Langslow D. Jacob Wackernagel, Lectures on Syntax: With Special Reference to Greek, Latin, and Germanic. Oxford University Press; 2009. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198153023.001.0001/acprof-9780198153023-chapter-40. Accessed May 22, 2013.