APA (7th ed.) Citation

Concone, G. Fifty lessons for the voice, op.9: For medium voice. G. Schirmer.

Chicago Style (17th ed.) Citation

Concone, Giuseppe. Fifty Lessons for the Voice, Op.9: For Medium Voice. New York: G. Schirmer.

MLA (9th ed.) Citation

Concone, Giuseppe. Fifty Lessons for the Voice, Op.9: For Medium Voice. G. Schirmer.

Warning: These citations may not always be 100% accurate.