Organization for European Economic Cooperation. European Productivity Agency. (1961). Series of lectures on economic growth, University of Madrid, January-February, 1961. O.E.C.D.
Lua i Stíl Chicago (17ú heag.)Organization for European Economic Cooperation. European Productivity Agency. Series of Lectures on Economic Growth, University of Madrid, January-February, 1961. [Paris: O.E.C.D, 1961.
Lua MLA (9ú heag.)Organization for European Economic Cooperation. European Productivity Agency. Series of Lectures on Economic Growth, University of Madrid, January-February, 1961. O.E.C.D, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.