Society for Policy Modeling. (1979). Journal of Policy Modeling. Elsevier Science Publishers.
Citação do estilo Chicago (17ª ed.)Society for Policy Modeling. Journal of Policy Modeling. New York: Elsevier Science Publishers, 1979.
Citação MLA (8ª ed.)Society for Policy Modeling. Journal of Policy Modeling. Elsevier Science Publishers, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.