@book{74420,
	author = {Gregory, Paul R. and Ruffin, Roy,},
	title = {Macroeconomics /},
	publisher = {HarperCollins Publishers,},
	year = {1994.},
	address = {New York, NY :},
	note = {Includes index.},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/ENGB13-00102.pdf}
}