Customs and Excise: Trade, Production, and Consumption in England 1640-1845. : Oxford University Press, 2003-07-17. Oxford Scholarship Online. 2010-01-01. Date Accessed 21 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199259212.001.0001/acprof-9780199259212>.
(2003-07-17). Customs and Excise: Trade, Production, and Consumption in England 1640-1845. : Oxford University Press. Retrieved 21 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199259212.001.0001/acprof-9780199259212.
Customs and Excise: Trade, Production, and Consumption in England 1640-1845. : Oxford University Press, 2003-07-17. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199259212.001.0001/acprof-9780199259212.
Ashworth WJ. Customs and Excise: Trade, Production, and Consumption in England 1640-1845. Oxford University Press; 2003. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199259212.001.0001/acprof-9780199259212. Accessed May 21, 2013.