Dunleavy, Patrick, Helen Margetts, Simon Bastow, and Jane Tinkler. "Explaining Performance II: Competitive Tension and the Power of the IT Industry." Digital Era Governance: IT Corporations, the State, and e-Government. : Oxford University Press, 2006-11-02. Oxford Scholarship Online. 2011-10-03. Date Accessed 24 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199296194.001.0001/acprof-9780199296194-chapter-5>.
Dunleavy, P., Margetts, H., Bastow, S., & Tinkler, J.(2006-11-02). Explaining Performance II: Competitive Tension and the Power of the IT Industry. In Digital Era Governance: IT Corporations, the State, and e-Government. : Oxford University Press. Retrieved 24 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199296194.001.0001/acprof-9780199296194-chapter-5.
Dunleavy, Patrick, Helen Margetts, Simon Bastow, and Jane Tinkler. "Explaining Performance II: Competitive Tension and the Power of the IT Industry." In Digital Era Governance: IT Corporations, the State, and e-Government. : Oxford University Press, 2006-11-02. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199296194.001.0001/acprof-9780199296194-chapter-5.
Dunleavy P, Margetts H, Bastow S, Tinkler J. Explaining Performance II: Competitive Tension and the Power of the IT Industry. In: Dunleavy P, Margetts H, Bastow S, Tinkler J. Digital Era Governance: IT Corporations, the State, and e-Government. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199296194.001.0001/acprof-9780199296194-chapter-5. Accessed May 24, 2013.