Dean, E. (1984). Education and economic productivity. Ballinger Pub. Co.
Lua i Stíl Chicago (17ú heag.)Dean, Edwin. Education and Economic Productivity. Cambridge, Mass: Ballinger Pub. Co, 1984.
Lua MLA (9ú heag.)Dean, Edwin. Education and Economic Productivity. Ballinger Pub. Co, 1984.
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