Journal of the Pennsylvania Academy of Science. Penn State University Press.
Lua i Stíl Chicago (17ú heag.)Journal of the Pennsylvania Academy of Science. Penn State University Press.
Lua MLA (9ú heag.)Journal of the Pennsylvania Academy of Science. Penn State University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.