Platform or Personality?: The Role of Party Leaders in Elections. : Oxford University Press, 2011-05-05. Oxford Scholarship Online. 2011-05-01. Date Accessed 23 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199595365.001.0001/acprof-9780199595365>.
(2011-05-05). Platform or Personality?: The Role of Party Leaders in Elections. : Oxford University Press. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199595365.001.0001/acprof-9780199595365.
Platform or Personality?: The Role of Party Leaders in Elections. : Oxford University Press, 2011-05-05. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199595365.001.0001/acprof-9780199595365.
Bittner A. Platform or Personality?: The Role of Party Leaders in Elections. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199595365.001.0001/acprof-9780199595365. Accessed May 23, 2013.