Parnes, H. S. (1962). Forecasting educational needs for economic and social development. Organisation for Economic Co-operation and Development.
Lua i Stíl Chicago (17ú heag.)Parnes, Herbert S. Forecasting Educational Needs for Economic and Social Development. [Paris]: Organisation for Economic Co-operation and Development, 1962.
Lua MLA (8ú heag.)Parnes, Herbert S. Forecasting Educational Needs for Economic and Social Development. Organisation for Economic Co-operation and Development, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.