Cita APA (7a ed.)

Dehejia, R. H., & Wahba, S. M. (1998). Causal effects in non-experimental studies: Re-evaluating the evaluation of training programs. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Dehejia, Rajeev Harsha, y Sadek M. Wahba. Causal Effects in Non-experimental Studies: Re-evaluating the Evaluation of Training Programs. Cambridge, MA: National Bureau of Economic Research, 1998.

Cita MLA (9a ed.)

Dehejia, Rajeev Harsha, y Sadek M. Wahba. Causal Effects in Non-experimental Studies: Re-evaluating the Evaluation of Training Programs. National Bureau of Economic Research, 1998.