@book{2488,
	author = {Stephenson, Helen. and Dummett, Paul.},
	title = {Life :},
	publisher = {National Geographic Learning; Cengage Learning,},
	year = {2013.},
	address = {Hampshire :},
	url = {https://itmsp.museknowledge.com/UOH?qurl=https://libros-uoh.uoh.cl/ESCUELADEEDUCACION/PEDAGOGIAINGLES/Life%2520intermediate/}
}