International Union for Conservation of Nature and Natural Resources, Osborn, J. K., & Trzyna, T. C. (1995). A Sustainable world: Defining and measuring sustainable development. Published for IUCN - the World Conservation Union by the International Center for the Environment and Public Policy, California Institute of Public Affairs.
Chicago Style (17. basım) AtıfInternational Union for Conservation of Nature and Natural Resources, Julia K. Osborn, ve Thaddeus C. Trzyna. A Sustainable World: Defining and Measuring Sustainable Development. Sacramento: Published for IUCN - the World Conservation Union by the International Center for the Environment and Public Policy, California Institute of Public Affairs, 1995.
MLA (9th ed.) AtıfInternational Union for Conservation of Nature and Natural Resources, et al. A Sustainable World: Defining and Measuring Sustainable Development. Published for IUCN - the World Conservation Union by the International Center for the Environment and Public Policy, California Institute of Public Affairs, 1995.