(1984). Education and economic productivity. Cambridge, Mass: Ballinger Pub. Co.
शिकागो स्टाइल उद्धरणEducation and Economic Productivity. Cambridge, Mass: Ballinger Pub. Co, 1984.
एमएलए उद्धरणEducation and Economic Productivity. Cambridge, Mass: Ballinger Pub. Co, 1984.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.