@book{55307,
	author = {Hershey, Amos S.,},
	title = {Diplomacy And The Study Of International Relations /},
	publisher = {Clarendon Press,},
	year = {1919.},
	address = {Oxford :},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B11-06839.pdf}
}