@book{1972,
	author = {Molina E., Sergio.},
	title = {El posturismo :},
	publisher = {Trillas,},
	year = {2006.},
	address = {México, D.F. :},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=c72b2b793c5bfbbb768789d25b82c642}
}