Hauptmann, G., & Harned, M. (1898). The sunken bell. [s.n.].
Lua i Stíl Chicago (17ú heag.)Hauptmann, Gerhart, agus Mary Harned. The Sunken Bell. Boston: [s.n.], 1898.
Lua MLA (8ú heag.)Hauptmann, Gerhart, agus Mary Harned. The Sunken Bell. [s.n.], 1898.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.