Langey, O. (1977). Practical tutor for the saxophone. Boosey & Hawkes.
Cita Chicago (17th ed.)Langey, Otto. Practical Tutor for the Saxophone. London: Boosey & Hawkes, 1977.
Cita MLA (8th ed.)Langey, Otto. Practical Tutor for the Saxophone. Boosey & Hawkes, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.