Hummel, J. N., & Novello, V. (1900). Alma virgo: An offertorium, for soprano solo and chorus. Novello, Ewer.
Lua i Stíl Chicago (17ú heag.)Hummel, Johann Nepomuk, agus Vincent Novello. Alma Virgo: An Offertorium, for Soprano Solo and Chorus. London: Novello, Ewer, 1900.
Lua MLA (9ú heag.)Hummel, Johann Nepomuk, agus Vincent Novello. Alma Virgo: An Offertorium, for Soprano Solo and Chorus. Novello, Ewer, 1900.
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