Roitberg, Evgeny S. "Variation in sexual size dimorphism within a widespread lizard species." Sex, Size and Gender Roles: Evolutionary Studies of Sexual Size Dimorphism. : Oxford University Press, 2007-07-05. Oxford Scholarship Online. 2007-09-01. Date Accessed 23 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199208784.001.0001/acprof-9780199208784-chapter-16>.
Roitberg, E.(2007-07-05). Variation in sexual size dimorphism within a widespread lizard species. In Sex, Size and Gender Roles: Evolutionary Studies of Sexual Size Dimorphism. : Oxford University Press. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199208784.001.0001/acprof-9780199208784-chapter-16.
Roitberg, Evgeny S. "Variation in sexual size dimorphism within a widespread lizard species." In Sex, Size and Gender Roles: Evolutionary Studies of Sexual Size Dimorphism. : Oxford University Press, 2007-07-05. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199208784.001.0001/acprof-9780199208784-chapter-16.
Roitberg ES. Variation in sexual size dimorphism within a widespread lizard species. In: Fairbairn DJ, Blanckenhorn WU, Székely T. Sex, Size and Gender Roles: Evolutionary Studies of Sexual Size Dimorphism. Oxford University Press; 2007. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199208784.001.0001/acprof-9780199208784-chapter-16. Accessed May 23, 2013.