APA

International Union for Conservation of Nature and Natural Resources. General Assembly, Technical Meeting of the International Union for Conservation of Nature and Natural Resources, . (1972). Proceedings of 11th General Assembly and 12th Technical Meeting, Banff, Canada, 11-16 September 1972. : .

Chicago

International Union for Conservation of Nature and Natural Resources. General Assembly, Technical Meeting of the International Union for Conservation of Nature and Natural Resources, . 1972. Proceedings of 11th General Assembly and 12th Technical Meeting, Banff, Canada, 11-16 September 1972. : .

Harvard

International Union for Conservation of Nature and Natural Resources. General Assembly, Technical Meeting of the International Union for Conservation of Nature and Natural Resources, . (1972). Proceedings of 11th General Assembly and 12th Technical Meeting, Banff, Canada, 11-16 September 1972. : .

MLA

International Union for Conservation of Nature and Natural Resources. General Assembly, Technical Meeting of the International Union for Conservation of Nature and Natural Resources, . Proceedings of 11th General Assembly and 12th Technical Meeting, Banff, Canada, 11-16 September 1972. : . 1972.