@book{2052,
	title = {EcoAula.es. :},
	publisher = {Editora Sibauste,},
	year = {2020.},
	address = {España :},
	url = {https://s03.s3c.es/pdf/0/1/01307e3c9f83e76b2085ab9e7efe7214_especiales.pdf}
}