@book{57399,
	author = {Palmer, Norman . and Perkins, Howard Cecil,},
	title = {International Relations :},
	publisher = {Houghton Mifflin Compant,},
	year = {1957.},
	address = {Boston :},
	edition = {Second Edition},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B11-06926.pdf}
}