Canada. Department of the Environment & United Nations Conference on the Human Environment. (1972). Canada and the human environment: A contribution by the Government of Canada to the United Nations Conference on the Human Environment Stockholm, Sweden, June 1972. s.n.
Chicago Style aipamenaCanada. Department of the Environment and United Nations Conference on the Human Environment. Canada and the Human Environment: A Contribution by the Government of Canada to the United Nations Conference on the Human Environment Stockholm, Sweden, June 1972. [Ottawa: s.n, 1972.
MLA aipamenaCanada. Department of the Environment and United Nations Conference on the Human Environment. Canada and the Human Environment: A Contribution by the Government of Canada to the United Nations Conference on the Human Environment Stockholm, Sweden, June 1972. s.n, 1972.