(1972). Curricula and syllabi in hydrology. Unesco.
Lua i Stíl Chicago (17ú heag.)Curricula and Syllabi in Hydrology. Paris: Unesco, 1972.
Lua MLA (8ú heag.)Curricula and Syllabi in Hydrology. Unesco, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.