Collins, A. E. P. (1959). Two hollow-based arrow-heads in carboniferous chert.
Lua i Stíl Chicago (17ú heag.)Collins, A. E. P. Two Hollow-based Arrow-heads in Carboniferous Chert. 1959.
Lua MLA (9ú heag.)Collins, A. E. P. Two Hollow-based Arrow-heads in Carboniferous Chert. 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
