@book{1785011,
	author = {Steven Topik; Cynthia Clark Northrup; Kenneth Pomeranz; Alfred E. Eckes, Jr; Patrick Manning; Jerry H. Bentley},
	title = {Encyclopedia of World Trade: From Ancient Times to the Present},
	publisher = {Taylor and Francis},
	url = {http://www.taylorfrancis.com/books/9781315704661}
}