Conference on Research in Income and Wealth, University of Wisconsin. Dept. of Economics, Conference on Education and Income, University of Wisconsin, 1968, & Hansen, W. L. (1970). Education, income, and human capital. National Bureau of Economic Research.
Lua i Stíl Chicago (17ú heag.)Conference on Research in Income and Wealth, University of Wisconsin. Dept. of Economics, University of Wisconsin Conference on Education and Income, agus W. Lee Hansen. Education, Income, and Human Capital. New York: National Bureau of Economic Research, 1970.
Lua MLA (9ú heag.)Conference on Research in Income and Wealth, et al. Education, Income, and Human Capital. National Bureau of Economic Research, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.