Language and the Learning Curve: A new theory of syntactic development. : Oxford University Press, 2006-11-02. Oxford Scholarship Online. 2010-04-01. Date Accessed 21 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299829.001.0001/acprof-9780199299829>.
(2006-11-02). Language and the Learning Curve: A new theory of syntactic development. : Oxford University Press. Retrieved 21 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299829.001.0001/acprof-9780199299829.
Language and the Learning Curve: A new theory of syntactic development. : Oxford University Press, 2006-11-02. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299829.001.0001/acprof-9780199299829.
Ninio A. Language and the Learning Curve: A new theory of syntactic development. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299829.001.0001/acprof-9780199299829. Accessed May 21, 2013.