@book{1728,
	author = {Borjas, George J.},
	title = {Labor economics},
	address = {New York: McGraw Hill, 2013},
	edition = {Sixth edition},
	url = {https://itmsp.museknowledge.com/UOH?qurl=https://libros-uoh.uoh.cl//ebook_2/labor-economics/}
}