Não informado. (1949). Journal of Geophysical Research. American Geophysical Union.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Geophysical Research. Washington: American Geophysical Union, 1949.
Lua MLA (8ú heag.)Não informado. Journal of Geophysical Research. American Geophysical Union, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.