Cita APA (7th ed.)

Manookian, J. (1997). Gradus: Progressive piano repertoire in six volumes. Windsor editions.

Cita Chicago (17th ed.)

Manookian, Jeff. Gradus: Progressive Piano Repertoire in Six Volumes. Canadá: Windsor editions, 1997.

Cita MLA (8th ed.)

Manookian, Jeff. Gradus: Progressive Piano Repertoire in Six Volumes. Windsor editions, 1997.