Wyoming Geological Association & Spalding, R. W. (1952). Guidebook: Seventh Annual Field Conference, Southern Big Horn Basin, Wyoming, 1952. The Association].
Lua i Stíl Chicago (17ú heag.)Wyoming Geological Association agus Robert W. Spalding. Guidebook: Seventh Annual Field Conference, Southern Big Horn Basin, Wyoming, 1952. [S.l.: The Association], 1952.
Lua MLA (8ú heag.)Wyoming Geological Association agus Robert W. Spalding. Guidebook: Seventh Annual Field Conference, Southern Big Horn Basin, Wyoming, 1952. The Association], 1952.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.