SPICKER, M. (1986). The master-pieces of vocalization: A graded series of vocal studies for all voices for Soprano. G. Schirmer. Inc.
Chicago Style aipamenaSPICKER, Max. The Master-pieces of Vocalization: A Graded Series of Vocal Studies for All Voices for Soprano. G. Schirmer. Inc, 1986.
MLA aipamenaSPICKER, Max. The Master-pieces of Vocalization: A Graded Series of Vocal Studies for All Voices for Soprano. G. Schirmer. Inc, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.