Ontario Industrial Waste Conference Toronto & Ontario. Ministry of the Environment. (1983). Proceedings of the thirtieth Ontario Industrial Waste Conference held at the Prince Hotel, Toronto, Ontario, June 12-15, 1983. Ontario Ministry of the Environment.
Lua i Stíl Chicago (17ú heag.)Ontario Industrial Waste Conference Toronto agus Ontario. Ministry of the Environment. Proceedings of the Thirtieth Ontario Industrial Waste Conference Held at the Prince Hotel, Toronto, Ontario, June 12-15, 1983. [Toronto]: Ontario Ministry of the Environment, 1983.
Lua MLA (8ú heag.)Ontario Industrial Waste Conference Toronto agus Ontario. Ministry of the Environment. Proceedings of the Thirtieth Ontario Industrial Waste Conference Held at the Prince Hotel, Toronto, Ontario, June 12-15, 1983. Ontario Ministry of the Environment, 1983.