Førsund, F. (1985). Production, Multi-Sectoral Growth and Planning. ELSEVIER.
Lua i Stíl Chicago (17ú heag.)Førsund, F.R. Production, Multi-Sectoral Growth and Planning. ELSEVIER, 1985.
Lua MLA (8ú heag.)Førsund, F.R. Production, Multi-Sectoral Growth and Planning. ELSEVIER, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.