@book{3399,
	author = {Corbetta, Perrigiorgio},
	title = {Metodología y técnicas de investigación social /},
	publisher = {McGraw-Hill Interamericana de España,},
	year = {2007.},
	address = {España :},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=869b0923e348357dc56fc4e964c00e56}
}