Guasch, Antonio. 1948. El idioma guaraní. Buenos Aires: Ediciones del Autor. (2nd edition).
@book{Guasch-1948,
address = {Buenos Aires},
author = {Guasch, Antonio},
note = {2nd edition},
publisher = {Ediciones del Autor},
title = {El idioma guaraní},
year = {1948}
}