Norese, María Rosalía: Contextualization and analysis of tango. Its origins to the emergence of the avant-garde. University of Salamanca, 2002 (restricted online copy, p. 5, at Google Books)
Ostuni, Ricardo (22 November 2011). "La baronesa del tango" [The baroness of tango] (in Spanish). Buenos Aires, Argentina: InfoNews. Archived from the original on 14 July 2017. Retrieved 14 July 2017.
Ostuni, Ricardo (22 November 2011). "La baronesa del tango" [The baroness of tango] (in Spanish). Buenos Aires, Argentina: InfoNews. Archived from the original on 14 July 2017. Retrieved 14 July 2017.