@book{76651,
	author = {Nicholson, Walter.},
	title = {Microeconomic theory :},
	publisher = {Dryden Press,},
	year = {1995.},
	address = {Fort Worth :},
	edition = {6th edition.},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/ENGB13-00131.pdf}
}