Cita APA (7a ed.)

Verdi, G., & Jefferys, C. (1989). Si, la stanchezza m'opprime=Home to our mountains: From the opera "Il Trovatore". G. Schirmer.

Cita Chicago Style (17a ed.)

Verdi, Giuseppe, y Charles Jefferys. Si, La Stanchezza M'opprime=Home to Our Mountains: From the Opera "Il Trovatore". New York: G. Schirmer, 1989.

Cita MLA (9a ed.)

Verdi, Giuseppe, y Charles Jefferys. Si, La Stanchezza M'opprime=Home to Our Mountains: From the Opera "Il Trovatore". G. Schirmer, 1989.