Pan American Institute of Geography and History. Commission on Geophysics. Revista geofísica. Instituto Panamericano de Geografía e Historia.
Lua i Stíl Chicago (17ú heag.)Pan American Institute of Geography and History. Commission on Geophysics. Revista Geofísica. México: Instituto Panamericano de Geografía e Historia.
Lua MLA (9ú heag.)Pan American Institute of Geography and History. Commission on Geophysics. Revista Geofísica. Instituto Panamericano de Geografía e Historia.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.