International Institute for Applied Systems Analysis & Levien, R. E. (1981). Draft research plan 1982-1986. International Institute for Applied Systems Analysis.
Style de citation Chicago (17e éd.)International Institute for Applied Systems Analysis et Roger Eli Levien. Draft Research Plan 1982-1986. Laxenburg: International Institute for Applied Systems Analysis, 1981.
Style de citation MLA (9e éd.)International Institute for Applied Systems Analysis et Roger Eli Levien. Draft Research Plan 1982-1986. International Institute for Applied Systems Analysis, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.