Ontario Industrial Waste Conference Toronto, Ont., & Ontario. Ministry of the Environment. (1986). Proceedings of the Thirty-third Ontario Industrial Waste Conference: Held at the Prince Hotel Toronto, Ontario June 15-18, 1986 : sponsored by the Ontario Ministry of the Environment. Ministry of the Environment.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিOntario Industrial Waste Conference Toronto, Ont., এবং Ontario. Ministry of the Environment. Proceedings of the Thirty-third Ontario Industrial Waste Conference: Held at the Prince Hotel Toronto, Ontario June 15-18, 1986 : Sponsored by the Ontario Ministry of the Environment. [Toronto]: Ministry of the Environment, 1986.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিOntario Industrial Waste Conference Toronto, Ont., এবং Ontario. Ministry of the Environment. Proceedings of the Thirty-third Ontario Industrial Waste Conference: Held at the Prince Hotel Toronto, Ontario June 15-18, 1986 : Sponsored by the Ontario Ministry of the Environment. Ministry of the Environment, 1986.