Darley, Gillian. Vesuvius. Boston: Harvard University Press, 2012. Web. Retrieved 19 Jun. 2013, from http://www.degruyter.com/view/product/184748

Darley, G. (2012). Vesuvius. Boston: Harvard University Press. Retrieved 19 Jun. 2013, from http://www.degruyter.com/view/product/184748

Darley, Gillian. 2012. Vesuvius. Boston: Harvard University Press. Retrieved 19 Jun. 2013, from http://www.degruyter.com/view/product/184748