Não informado. (1984). Systems analysis, modeling, simulation. Akademie Verlag.
Lua i Stíl Chicago (17ú heag.)Não informado. Systems Analysis, Modeling, Simulation. Berlin: Akademie Verlag, 1984.
Lua MLA (8ú heag.)Não informado. Systems Analysis, Modeling, Simulation. Akademie Verlag, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.