Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Vaccai, Nicola and Marzials, Theophilus and Baker, Theodore",Practical Italian vocal method,"Rev. ed. with translations by Theo. Marzials, for high soprano",G. Schirmer,1923,Schirmer's library of musical classics,,,,https://cir.nii.ac.jp/crid/1130282269613700352