(2008). Sacred songs and arias for mezzo-soprano, alto [CD-ROM]: The ultimate collection ; printable scanned images of more than 1400 pages of public-domain music. CD Sheet Music.
Chicago-Zitierstil (17. Ausg.)Sacred Songs and Arias for Mezzo-soprano, Alto [CD-ROM]: The Ultimate Collection ; Printable Scanned Images of More than 1400 Pages of Public-domain Music. [Verona, N. J.?]: CD Sheet Music, 2008.
MLA-Zitierstil (9. Ausg.)Sacred Songs and Arias for Mezzo-soprano, Alto [CD-ROM]: The Ultimate Collection ; Printable Scanned Images of More than 1400 Pages of Public-domain Music. CD Sheet Music, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.