@book{282,
	author = {Sapag Chain, Nassir and Sapag Chain,Reinaldo},
	title = {Preparación y evaluación de proyectos /},
	publisher = {Mc Graw Hill,},
	year = {2008.},
	address = {México:},
	edition = {5a. ed.},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=90e5f861b54afb46646d0295c97ecc11}
}