APA (7th ed.) Citation

Heckman, J., Tobias, J. L., & Vytlacil, E. (2000). Simple estimators for treatment parameters in a latent variable framework with an application to estiamting the returns to schooling. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Heckman, James, Justin L. Tobias, and Edward Vytlacil. Simple Estimators for Treatment Parameters in a Latent Variable Framework with an Application to Estiamting the Returns to Schooling. Cambridge: National Bureau of Economic Research, 2000.

MLA (9th ed.) Citation

Heckman, James, et al. Simple Estimators for Treatment Parameters in a Latent Variable Framework with an Application to Estiamting the Returns to Schooling. National Bureau of Economic Research, 2000.