Westphal, F. W. (1990). Guide to teaching woodwinds (5th ed.). W.C. Brown.
Cita Chicago (17th ed.)Westphal, Frederick W. Guide to Teaching Woodwinds. 5th ed. Dubuque: W.C. Brown, 1990.
Cita MLA (9th ed.)Westphal, Frederick W. Guide to Teaching Woodwinds. 5th ed. W.C. Brown, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.