WHITTAKER, SIMON. "Droit Privé: The Law of Sale." Liability for Products: English Law, French Law, and European Harmonization. : Oxford University Press, 2005-09-29. Oxford Scholarship Online. 2012-03-22. Date Accessed 24 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198256137.001.0001/acprof-9780198256137-chapter-4>.
WHITTAKER, S.(2005-09-29). Droit Privé: The Law of Sale. In Liability for Products: English Law, French Law, and European Harmonization. : Oxford University Press. Retrieved 24 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198256137.001.0001/acprof-9780198256137-chapter-4.
WHITTAKER, SIMON. "Droit Privé: The Law of Sale." In Liability for Products: English Law, French Law, and European Harmonization. : Oxford University Press, 2005-09-29. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198256137.001.0001/acprof-9780198256137-chapter-4.
WHITTAKER S. Droit Privé: The Law of Sale. In: Whittaker S. Liability for Products: English Law, French Law, and European Harmonization. Oxford University Press; 2005. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198256137.001.0001/acprof-9780198256137-chapter-4. Accessed May 24, 2013.