Eternal God: A Study of God without Time. : Oxford University Press, 1997-04-24. Oxford Scholarship Online. 2003-11-01. Date Accessed 19 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/0198237251.001.0001/acprof-9780198237259>.
(1997-04-24). Eternal God: A Study of God without Time. : Oxford University Press. Retrieved 19 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/0198237251.001.0001/acprof-9780198237259.
Eternal God: A Study of God without Time. : Oxford University Press, 1997-04-24. http://www.oxfordscholarship.com/view/10.1093/0198237251.001.0001/acprof-9780198237259.
Helm P. Eternal God: A Study of God without Time. Oxford University Press; 1997. http://www.oxfordscholarship.com/view/10.1093/0198237251.001.0001/acprof-9780198237259. Accessed June 19, 2013.