APA
Dehejia R. H., Wahba S., . (1998). Propensity score matching methods for non-experimental causal studies. Cambridge, Mass: National Bureau of Economic Research.
Chicago
Dehejia Rajeev H, Wahba Sadek, . 1998. Propensity score matching methods for non-experimental causal studies. Cambridge, Mass: National Bureau of Economic Research.
Harvard
Dehejia R. H., Wahba S., . (1998). Propensity score matching methods for non-experimental causal studies. Cambridge, Mass: National Bureau of Economic Research.
MLA
Dehejia Rajeev H, Wahba Sadek, . Propensity score matching methods for non-experimental causal studies. Cambridge, Mass: National Bureau of Economic Research. 1998.