Vertaling: Choral telling. Dale Jergenson. A Cappella bladmusiek. Doedelsak bladmusiek. Intermediêre. Choral telling. saamgestel deur Dale Jergenson.
Vertaling: Hal Leonard Recording Metode Boek 5. Ingenieurswese en vervaardiging. Bill Gibson. Hal Leonard Recording Metode Boek 5. 2nd Edition.
Vertaling: Gebuig Sørensen. The Piano Concerto is in two movements.