Willi Apel. (1972). Harvard dictionary of music. Cambridge, Massachusetts: Harvard Univ. Press.
Chicago Style aipamenaWilli Apel. Harvard Dictionary of Music. Cambridge, Massachusetts: Harvard Univ. Press, 1972.
MLA aipamenaWilli Apel. Harvard Dictionary of Music. Cambridge, Massachusetts: Harvard Univ. Press, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.