Griffin, D. R. (1960). Echoes of bats and men. Heinemann.
Lua i Stíl Chicago (17ú heag.)Griffin, Donald Redfield. Echoes of Bats and Men. Lond.: Heinemann, 1960.
Lua MLA (8ú heag.)Griffin, Donald Redfield. Echoes of Bats and Men. Heinemann, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.