@book{173551,
	author = {Willcox, Isobel.},
	title = {Actividades lingüisticas para el periodo de trabajo independiente},
	publisher = {Centro Regional de Ayuda Tecnica},
	year = {1968.},
	series = {Manual UTEHA breve},
	address = {Mexico},
	note = {Translation of Language arts activities for the independent work period.}
}