@book{66,
	author = {Marks, Jonathan},
	title = {English pronunciation in use: Elementary},
	publisher = {Cambridge University Press,},
	year = {2007},
	address = {Cambridge :},
	edition = {1 ed},
	note = {Self-study and classroom use},
	url = {https://itmsp.museknowledge.com/UOH?qurl=https://libros-uoh.uoh.cl//ebook_2/english-pronunciation-in-useelementary/}
}