Robertson, Lindsay G. "The Illinois and Wabash Land Companies: Purchases and Petitions." Conquest by Law: How the Discovery of America Dispossessed Indigenous Peoples of Their Lands. : Oxford University Press, 2005-09-22. Oxford Scholarship Online. 2007-09-01. Date Accessed 26 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195148695.001.0001/acprof-9780195148695-chapter-1>.
Robertson, L.(2005-09-22). The Illinois and Wabash Land Companies: Purchases and Petitions. In Conquest by Law: How the Discovery of America Dispossessed Indigenous Peoples of Their Lands. : Oxford University Press. Retrieved 26 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195148695.001.0001/acprof-9780195148695-chapter-1.
Robertson, Lindsay G. "The Illinois and Wabash Land Companies: Purchases and Petitions." In Conquest by Law: How the Discovery of America Dispossessed Indigenous Peoples of Their Lands. : Oxford University Press, 2005-09-22. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195148695.001.0001/acprof-9780195148695-chapter-1.
Robertson LG. The Illinois and Wabash Land Companies: Purchases and Petitions. In: Robertson LG. Conquest by Law: How the Discovery of America Dispossessed Indigenous Peoples of Their Lands. Oxford University Press; 2005. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195148695.001.0001/acprof-9780195148695-chapter-1. Accessed May 26, 2013.