International Union for Conservation of Nature and Natural Resources : Banff & Elliott, H. (1973). Conservation and development: Papers and proceedings IUCN's twelfth technical meeting, Banff, Alberta, Canada 12 to 15 September 1972 = Rapports et proces-verbaux douzieme reunion technique de l'uicn. IUCN.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Union for Conservation of Nature and Natural Resources : Banff και Hugh Elliott. Conservation and Development: Papers and Proceedings IUCN's Twelfth Technical Meeting, Banff, Alberta, Canada 12 to 15 September 1972 = Rapports Et Proces-verbaux Douzieme Reunion Technique De L'uicn. Morges: IUCN, 1973.
Παραπομπή σε μορφή MLA (9th εκδ.)International Union for Conservation of Nature and Natural Resources : Banff και Hugh Elliott. Conservation and Development: Papers and Proceedings IUCN's Twelfth Technical Meeting, Banff, Alberta, Canada 12 to 15 September 1972 = Rapports Et Proces-verbaux Douzieme Reunion Technique De L'uicn. IUCN, 1973.