Não informado. (1976). International dredging abstracts. British Hydromechanics Research Association.
Lua i Stíl Chicago (17ú heag.)Não informado. International Dredging Abstracts. Bedford, Inglaterra: British Hydromechanics Research Association, 1976.
Lua MLA (8ú heag.)Não informado. International Dredging Abstracts. British Hydromechanics Research Association, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.