Clibborn, E. (1859). On the probable age of flint implements found in gravel-beds.
Lua i Stíl Chicago (17ú heag.)Clibborn, Edward. On the Probable Age of Flint Implements Found in Gravel-beds. 1859.
Lua MLA (9ú heag.)Clibborn, Edward. On the Probable Age of Flint Implements Found in Gravel-beds. 1859.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
