Donohue, J. J. I., Heckman, J. J., & Todd, P. E. (1998). Social action, private choice, and philanthrophy: Understanding the sources of improvements in black schooling in Georgia, 1911-1960. National Bureau of Economic Research.
芝加哥风格引文Donohue, John J. III, James J. Heckman, 与 Petra E. Todd. Social Action, Private Choice, and Philanthrophy: Understanding the Sources of Improvements in Black Schooling in Georgia, 1911-1960. Cambride: National Bureau of Economic Research, 1998.
MLA引文Donohue, John J. III, et al. Social Action, Private Choice, and Philanthrophy: Understanding the Sources of Improvements in Black Schooling in Georgia, 1911-1960. National Bureau of Economic Research, 1998.
警告：这些引文格式不一定是100％准确.