Weyenbergh (1875). "Apuntes Pequenos". Periodico-Zoológico (in Spanish and German). 1 (4). Buenos Aires: 331–333. Archived from the original on 6 July 2022 – via Google Books.
Weyenbergh (1875). "Apuntes Pequenos". Periodico-Zoológico (in Spanish and German). 1 (4). Buenos Aires: 331–333. Archived from the original on 6 July 2022 – via Google Books.