Stone, R. (1981). Aspects of economic and social modelling. Librairie Droz.
Lua i Stíl Chicago (17ú heag.)Stone, Richard. Aspects of Economic and Social Modelling. Geneva: Librairie Droz, 1981.
Lua MLA (9ú heag.)Stone, Richard. Aspects of Economic and Social Modelling. Librairie Droz, 1981.
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