@book{49196,
	author = {Roskin, Michael,},
	title = {Political science :},
	publisher = {Prentice Hall,},
	year = {1997.},
	address = {Upper Saddle River, N.J. :},
	edition = {6th edition.},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/ENGB08-00101.pdf}
}