Παραπομπή APA

Schultz, T. W. (1980). Investing in people: The economics of population quality. London: University Of California Press.

Παραπομπή Chicago Style

Schultz, Theodore W. Investing in People: The Economics of Population Quality. London: University Of California Press, 1980.

Παραπομπή MLA

Schultz, Theodore W. Investing in People: The Economics of Population Quality. London: University Of California Press, 1980.

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