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.
Cita Chicago (17th ed.)Canada. Department of the Environment i 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.
Cita MLA (9th ed.)Canada. Department of the Environment i 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.