@book{2097,
	author = {World Health Organization},
	title = {Operational principles for good pharmaceutical procurement},
	publisher = {WHO,},
	year = {1999.},
	address = {Geneva :},
	url = {https://apps.who.int/iris/bitstream/handle/10665/66251/WHO_EDM_PAR_99.5.pdf?sequence=1&isAllowed=y}
}