Innovation in Local Economies: Germany in Comparative Context. : Oxford University Press, 2009-04-01. Oxford Scholarship Online. 2009-05-01. Date Accessed 18 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199551170.001.0001/acprof-9780199551170>.
(2009-04-01). Innovation in Local Economies: Germany in Comparative Context. : Oxford University Press. Retrieved 18 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199551170.001.0001/acprof-9780199551170.
Innovation in Local Economies: Germany in Comparative Context. : Oxford University Press, 2009-04-01. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199551170.001.0001/acprof-9780199551170.
Crouch C, Voelzkow H. Innovation in Local Economies: Germany in Comparative Context. Oxford University Press; 2009. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199551170.001.0001/acprof-9780199551170. Accessed June 18, 2013.