@book{22491,
	author = {Suárez Ramírez, Pedro José},
	title = {Grafisura /},
	publisher = {Corporación Unificada Nacional de Educación Superior,},
	year = {2017.},
	address = {Bogotá (Colombia) :},
	url = {https://drive.google.com/file/d/1kWnSURuKsSCf4q6TiZUKMAV9e6cqL444/view?usp=sharing}
}