Ruttan, Vernon W. "Interchangeable Parts and Mass Production." Is War Necessary for Economic Growth?: Military Procurement and Technology Development. : Oxford University Press, 2006-01-26. Oxford Scholarship Online. 2006-02-01. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/0195188047.001.0001/acprof-9780195188042-chapter-2>.
Ruttan, V.(2006-01-26). Interchangeable Parts and Mass Production. In Is War Necessary for Economic Growth?: Military Procurement and Technology Development. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/0195188047.001.0001/acprof-9780195188042-chapter-2.
Ruttan, Vernon W. "Interchangeable Parts and Mass Production." In Is War Necessary for Economic Growth?: Military Procurement and Technology Development. : Oxford University Press, 2006-01-26. http://www.oxfordscholarship.com/view/10.1093/0195188047.001.0001/acprof-9780195188042-chapter-2.
Ruttan VW. Interchangeable Parts and Mass Production. In: Ruttan VW. Is War Necessary for Economic Growth?: Military Procurement and Technology Development. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/0195188047.001.0001/acprof-9780195188042-chapter-2. Accessed May 22, 2013.