Cita APA (7th ed.)

Czerny, C., & Vogrich, M. (1983). Carl Czerny Op. 139: One hundred progressive studies without octaves for the piano. G. Schimer.

Cita Chicago (17th ed.)

Czerny, Carl, i Max Vogrich. Carl Czerny Op. 139: One Hundred Progressive Studies Without Octaves for the Piano. New York: G. Schimer, 1983.

Cita MLA (8th ed.)

Czerny, Carl, i Max Vogrich. Carl Czerny Op. 139: One Hundred Progressive Studies Without Octaves for the Piano. G. Schimer, 1983.