Não informado. (1978). ISWA Journal. International Solid Wastes and Public Cleansing Association.
Chicago-referens (17:e uppl.)Não informado. ISWA Journal. Zurich, Alemanha: International Solid Wastes and Public Cleansing Association, 1978.
MLA-referens (8:e uppl.)Não informado. ISWA Journal. International Solid Wastes and Public Cleansing Association, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.