Erasmus, H. J. "The Interaction of Substantive Law and Procedure." Southern Cross: Civil Law and Common Law in South Africa. : Oxford University Press, 1996-11-07. Oxford Scholarship Online. 2012-03-22. Date Accessed 18 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198260875.001.0001/acprof-9780198260875-chapter-5>.
Erasmus, H.(1996-11-07). The Interaction of Substantive Law and Procedure. In Southern Cross: Civil Law and Common Law in South Africa. : Oxford University Press. Retrieved 18 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198260875.001.0001/acprof-9780198260875-chapter-5.
Erasmus, H. J. "The Interaction of Substantive Law and Procedure." In Southern Cross: Civil Law and Common Law in South Africa. : Oxford University Press, 1996-11-07. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198260875.001.0001/acprof-9780198260875-chapter-5.
Erasmus HJ. The Interaction of Substantive Law and Procedure. In: Zimmermann R, Visser D. Southern Cross: Civil Law and Common Law in South Africa. Oxford University Press; 1996. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198260875.001.0001/acprof-9780198260875-chapter-5. Accessed June 18, 2013.