@book{4,
	title = {Tratado de Promoción Comercial (TPC) Panamá y Estados Unidos de América :},
	publisher = {Ministerio de Comercio e Industrias,},
	year = {2012.},
	address = {Panamá :},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=129b740d8d8147b070940a5cac1c60df}
}