Schultz, T. W. (1981). Investment in human capital: The role of education and of research. The Free Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchultz, Theodore W. Investment in Human Capital: The Role of Education and of Research. The Free Press, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSchultz, Theodore W. Investment in Human Capital: The Role of Education and of Research. The Free Press, 1981.
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