APA (7th ed.) Citation

Altonji, J. G., Elder, T. E., & Taber, C. (2000). Selection on observed and unobserved variables: Assessing the effectiveness of Catholic schools. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Altonji, Joseph G., Todd E. Elder, and Christopher Taber. Selection on Observed and Unobserved Variables: Assessing the Effectiveness of Catholic Schools. Cambridge, MA: National Bureau of Economic Research, 2000.

MLA (9th ed.) Citation

Altonji, Joseph G., et al. Selection on Observed and Unobserved Variables: Assessing the Effectiveness of Catholic Schools. National Bureau of Economic Research, 2000.

Warning: These citations may not always be 100% accurate.