Articles
Opereta
Oliveira, Gonçalo Antunes de (2016) Opereta. In Bloomsbury Encyclopedia of Popular Music of the World: Genres - Europe. New York: Bloomsbury, Vol. XII.
Oliveira, Gonçalo Antunes de (2016) Opereta. In Bloomsbury Encyclopedia of Popular Music of the World: Genres - Europe. New York: Bloomsbury, Vol. XII.