Beyond Neurotransmission: Neuromodulation and its Importance for Information Processing. : Oxford University Press, 1999-08-05. Oxford Scholarship Online. 2012-03-22. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198524243.001.0001/acprof-9780198524243>.
(1999-08-05). Beyond Neurotransmission: Neuromodulation and its Importance for Information Processing. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198524243.001.0001/acprof-9780198524243.
Beyond Neurotransmission: Neuromodulation and its Importance for Information Processing. : Oxford University Press, 1999-08-05. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198524243.001.0001/acprof-9780198524243.
Katz P. Beyond Neurotransmission: Neuromodulation and its Importance for Information Processing. Oxford University Press; 1999. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198524243.001.0001/acprof-9780198524243. Accessed May 22, 2013.