Cita APA (7th ed.)

(2008). Bel Canto for Trombone and Piano. De Haske Publications BV.

Cita Chicago (17th ed.)

Bel Canto for Trombone and Piano. Heerenveen, Holland: De Haske Publications BV, 2008.

Cita MLA (9th ed.)

Bel Canto for Trombone and Piano. De Haske Publications BV, 2008.