Klengel, J. 2 pieces (1. Humoresque; 2. Serenade), opus 5, for four cellos. International Music.
Lua i Stíl Chicago (17ú heag.)Klengel, Julius. 2 Pieces (1. Humoresque; 2. Serenade), Opus 5, for Four Cellos. New York: International Music.
Lua MLA (9ú heag.)Klengel, Julius. 2 Pieces (1. Humoresque; 2. Serenade), Opus 5, for Four Cellos. International Music.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.