Cita APA (7a ed.)

Heller, S. (1901). Twenty-four preludes for the piano, op. 81. G. Schirmer.

Cita Chicago Style (17a ed.)

Heller, Stephen. Twenty-four Preludes for the Piano, Op. 81. New York: G. Schirmer, 1901.

Cita MLA (9a ed.)

Heller, Stephen. Twenty-four Preludes for the Piano, Op. 81. G. Schirmer, 1901.