Não informado. (1982). Wastes management. Institute of Solid Wastes Management.
Lua i Stíl Chicago (17ú heag.)Não informado. Wastes Management. London: Institute of Solid Wastes Management, 1982.
Lua MLA (8ú heag.)Não informado. Wastes Management. Institute of Solid Wastes Management, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.