Society for Policy Modeling. (1979). Journal of Policy Modeling. Elsevier Science Publishers.
Lua i Stíl Chicago (17ú heag.)Society for Policy Modeling. Journal of Policy Modeling. New York: Elsevier Science Publishers, 1979.
Lua MLA (8ú heag.)Society for Policy Modeling. Journal of Policy Modeling. Elsevier Science Publishers, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.