@book{159,
	author = {Khadija Sharife  Sarah Bracking},
	title = {Rough and polished: a case study of the diamond pricing and valuation system},
	publisher = { The Leverhulme Centre for the Study of Value School of Environment, Education and Development The University of Manchester},
	year = {2014.},
	address = {United Kingdom},
	url = {http://iffoadatabase.trustafrica.org/iff/wp4-bracking-sharife-rough-and-polished-15may.pdf}
}