University of Chicago. Department of Geology. The journal of geology. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)University of Chicago. Department of Geology. The Journal of Geology. Chicago: University of Chicago Press.
Lua MLA (9ú heag.)University of Chicago. Department of Geology. The Journal of Geology. University of Chicago Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.