Krickeberg, D., & Martius, K. (1994). Two Trumpet Mutes Recently Acquired by the Germanisches Nationalmuseum, Nuremberg.
Lua i Stíl Chicago (17ú heag.)Krickeberg, Dieter, agus Klaus Martius. Two Trumpet Mutes Recently Acquired by the Germanisches Nationalmuseum, Nuremberg. 1994.
Lua MLA (8ú heag.)Krickeberg, Dieter, agus Klaus Martius. Two Trumpet Mutes Recently Acquired by the Germanisches Nationalmuseum, Nuremberg. 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.