@book{124,
	author = {Marin, Isidoro and Alma, Raúl J.A.},
	title = {Manual básico de métodos de camino crítico.},
	publisher = {Macchi, },
	year = {1977.},
	address = {Buenos Aires : },
	edition = {1ra.ed.},
	note = {Incluye bibliografía.}
}