Commonwealth Secretariat. Economic Affairs Division & Marstrand, P. K. (1991). Sustainable development: An imperative for environmental protection : report by a group of experts on environmental concerns and the Commonwealth. Group of Experts on Environmental Concerns and the Commonwealth., Commonwealth Secretariat.

Commonwealth Secretariat. Economic Affairs Division and Pauline K. Marstrand. Sustainable Development: An Imperative for Environmental Protection : Report by a Group of Experts on Environmental Concerns and the Commonwealth. London: Group of Experts on Environmental Concerns and the Commonwealth., Commonwealth Secretariat, 1991.

Commonwealth Secretariat. Economic Affairs Division and Pauline K. Marstrand. Sustainable Development: An Imperative for Environmental Protection : Report by a Group of Experts on Environmental Concerns and the Commonwealth. Group of Experts on Environmental Concerns and the Commonwealth., Commonwealth Secretariat, 1991.