Não informado. (1973). Solid wastes management. Institute of Solid Wastes Management.
Lua i Stíl Chicago (17ú heag.)Não informado. Solid Wastes Management. London: Institute of Solid Wastes Management, 1973.
Lua MLA (8ú heag.)Não informado. Solid Wastes Management. Institute of Solid Wastes Management, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.