Rijckborst, H. (1967). Hydrology of the upper-garonne basin (Valle de Arán, Spain).
Lua i Stíl Chicago (17ú heag.)Rijckborst, Hans. Hydrology of the Upper-garonne Basin (Valle De Arán, Spain). 1967.
Lua MLA (8ú heag.)Rijckborst, Hans. Hydrology of the Upper-garonne Basin (Valle De Arán, Spain). 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.