International Union for Conservation of Nature and Natural Resources, International Environment Information System (United Nations Environment Programme) Programme Activity Centre, France Ministere de l'environment, Netherlands Ministerie van Landbouw, Natuurbeheer en Visserij, Grose, K., Thiery, C., . . . Christenson, J. S. (1995). A sourcebook for conservation and biological diversity information. IUCN - The World Conservation Union in collaboration with the United Nations Environment Programme, INFOTERRA Programme Activity Centre.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Union for Conservation of Nature and Natural Resources, International Environment Information System (United Nations Environment Programme) Programme Activity Centre, France Ministere de l'environment, Natuurbeheer en Visserij Netherlands Ministerie van Landbouw, Kevin Grose, Cecile Thiery, Eric S. Haward, και J. Scott Christenson. A Sourcebook for Conservation and Biological Diversity Information. Gland; Cambridge: IUCN - The World Conservation Union in collaboration with the United Nations Environment Programme, INFOTERRA Programme Activity Centre, 1995.
Παραπομπή σε μορφή MLA (9th εκδ.)International Union for Conservation of Nature and Natural Resources, et al. A Sourcebook for Conservation and Biological Diversity Information. IUCN - The World Conservation Union in collaboration with the United Nations Environment Programme, INFOTERRA Programme Activity Centre, 1995.