Lua APA (7ú heag.)

Não informado. The Mountain Geologist. Rocky Mountain Association of Geologists.

Lua i Stíl Chicago (17ú heag.)

Não informado. The Mountain Geologist. Denver, Colo: Rocky Mountain Association of Geologists.

Lua MLA (8ú heag.)

Não informado. The Mountain Geologist. Rocky Mountain Association of Geologists.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.