@book{49494,
	author = {Vázquez de Betancourt, Ana L.},
	title = {Dinámica de grupos},
	publisher = {Editorial Nosotros},
	year = {1985.},
	address = {San Juan, P.R.},
	edition = {1. ed.},
	note = {At foot of title: Liga de Cooperativas de Puerto Rico.}
}