Não informado. (1975). Solid wastes. Institute of Solid Wastes Management.
Lua i Stíl Chicago (17ú heag.)Não informado. Solid Wastes. London: Institute of Solid Wastes Management, 1975.
Lua MLA (8ú heag.)Não informado. Solid Wastes. Institute of Solid Wastes Management, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.