Παραπομπή σε μορφή APA (7η εκδ.)

IUCN - The World Conservation Union, Trzyna, T. C., & Osborn, J. K. (1995). A sustainable world: Defining and measuring sustainable development. International Center for the Environment and Public Policy.

Παραπομπή σε μορφή Chicago (17η εκδ.)

IUCN - The World Conservation Union, Thaddeus C. Trzyna, και Julia K. Osborn. A Sustainable World: Defining and Measuring Sustainable Development. Sacramento; Claremont: International Center for the Environment and Public Policy, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

IUCN - The World Conservation Union, et al. A Sustainable World: Defining and Measuring Sustainable Development. International Center for the Environment and Public Policy, 1995.