@book{56515,
	author = {Brownlie, Ian.},
	title = {Principles of public international law /},
	publisher = {Clarendon Press ;},
	year = {1990.},
	address = {Oxford [England] :},
	edition = {4th edition.},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/ENGB11-00029.pdf}
}