Heckman, J. J., & Vytlacil, E. (2000). Identifying the role of cognitive ability in explaining the level of and change in the return to schooling. National Bureau of Economic Research.
Цитирование в стиле Чикаго (17-е изд.)Heckman, James J., и Edward Vytlacil. Identifying the Role of Cognitive Ability in Explaining the Level of and Change in the Return to Schooling. Cambridge: National Bureau of Economic Research, 2000.
Цитирование MLA (9-е изд.)Heckman, James J., и Edward Vytlacil. Identifying the Role of Cognitive Ability in Explaining the Level of and Change in the Return to Schooling. National Bureau of Economic Research, 2000.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.