@book{7101,
	author = {Emery, E. David and Gómez de Acosta, María Lucila},
	title = {Principios de economía :},
	publisher = {Books for Profesionals,},
	year = {1986.},
	series = {Harcourt brace jovanovich compendios universitarios},
	address = {Bogotá :}
}