@book{51027,
	author = {Bastable, C. F},
	title = {The Theory of International Trade :},
	publisher = {Macmillan and Co., Limited New York: The Macmillan Company ,},
	year = {1903.},
	address = {London :},
	edition = {Fourth Edition},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B13-08547.pdf}
}