Schubert, F. P. (1999). Who is Sylvia: Song. Music Sales.
Citación estilo ChicagoSchubert, Franz Peter. Who Is Sylvia: Song. New York: Music Sales, 1999.
Cita MLASchubert, Franz Peter. Who Is Sylvia: Song. Music Sales, 1999.
Warning: These citations may not always be 100% accurate.