Não informado. (1893). University of California publications in geological sciences. University of California Press.
Lua i Stíl Chicago (17ú heag.)Não informado. University of California Publications in Geological Sciences. Berkeley, Calif: University of California Press, 1893.
Lua MLA (8ú heag.)Não informado. University of California Publications in Geological Sciences. University of California Press, 1893.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.