@book{49507,
	author = {Rosario, Rubén del},
	title = {Consideraciones sobre la lengua en Puerto Rico.},
	publisher = {Instituto de Cultura Puertorriqueña},
	year = {1958.},
	series = {Ciclo de conferencias sobre la historia de Puerto Rico},
	address = {San Juan, P.R.},
	note = {Cover title.}
}