Eiseley, L. Oregon trail: Loren Eiseley. The West.(1979).
Lua i Stíl Chicago (17ú heag.)Eiseley, Loren. "Oregon Trail: Loren Eiseley." The West.(1979) .
Lua MLA (8ú heag.)Eiseley, Loren. "Oregon Trail: Loren Eiseley." The West.(1979), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.