Citazione Stile APA (7a Edizione)

Gordon, C. (1981). Tongue level exercises for trumpet (Trebel Clef ed.). C. Fischer.

Citazione stile Chigago Style (17a edizione)

Gordon, Claude. Tongue Level Exercises for Trumpet. Trebel Clef ed. New York: C. Fischer, 1981.

Citatione MLA (9a ed.)

Gordon, Claude. Tongue Level Exercises for Trumpet. Trebel Clef ed. C. Fischer, 1981.