APA (7th ed.) Zitazioa

Klengel, J. (1959). Technical studies for cello. International Music.

Chicago Style (17th ed.) Zitazioa

Klengel, Julius. Technical Studies for Cello. Nueva York: International Music, 1959.

MLA (9th ed.) Zitazioa

Klengel, Julius. Technical Studies for Cello. International Music, 1959.