Panofka, H. (1900). The art of singing: Twenty-four vocalises for soprano (m.-soprano or tenor) : the same transposed for alto, baritone or bass) : op. 81. G. Schirmer.
Chicago Style (17th ed.) CitationPanofka, Heinrich. The Art of Singing: Twenty-four Vocalises for Soprano (m.-soprano or Tenor) : The Same Transposed for Alto, Baritone or Bass) : Op. 81. New York: G. Schirmer, 1900.
MLA (9th ed.) CitationPanofka, Heinrich. The Art of Singing: Twenty-four Vocalises for Soprano (m.-soprano or Tenor) : The Same Transposed for Alto, Baritone or Bass) : Op. 81. G. Schirmer, 1900.
Warning: These citations may not always be 100% accurate.