Cita APA (7a ed.)

Byrd, W., & Balla, G. English Piano Music for the Young Musician. Editio Musica.

Cita Chicago Style (17a ed.)

Byrd, William, y György Balla. English Piano Music for the Young Musician. Budapest: Editio Musica.

Cita MLA (8a ed.)

Byrd, William, y György Balla. English Piano Music for the Young Musician. Editio Musica.