Não informado. (1981). Mountain Research and Development. United Nations University.
Style de citation Chicago (17e éd.)Não informado. Mountain Research and Development. Boulder, Colo: United Nations University, 1981.
Style de citation MLA (8e éd.)Não informado. Mountain Research and Development. United Nations University, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.