Cita APA (7a ed.)

Heller, S. Twenty-five melodious studies for the piano, op. 45. G. Schirmer.

Cita Chicago Style (17a ed.)

Heller, Stephen. Twenty-five Melodious Studies for the Piano, Op. 45. New York: G. Schirmer.

Cita MLA (9a ed.)

Heller, Stephen. Twenty-five Melodious Studies for the Piano, Op. 45. G. Schirmer.