The Apocalyptic Year 1000: Religious Expectation and Social Change, 950-1050. : Oxford University Press, 2003-06-05. Oxford Scholarship Online. 2011-10-03. Date Accessed 21 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195161625.001.0001/acprof-9780195161625>.
(2003-06-05). The Apocalyptic Year 1000: Religious Expectation and Social Change, 950-1050. : Oxford University Press. Retrieved 21 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195161625.001.0001/acprof-9780195161625.
The Apocalyptic Year 1000: Religious Expectation and Social Change, 950-1050. : Oxford University Press, 2003-06-05. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195161625.001.0001/acprof-9780195161625.
Landes R, Gow A, Van Meter DC. The Apocalyptic Year 1000: Religious Expectation and Social Change, 950-1050. Oxford University Press; 2003. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195161625.001.0001/acprof-9780195161625. Accessed May 21, 2013.