APA
Dehejia R. H., Wahba Sadek & National Bureau Of Economic Research. (1998). Propensity score matching methods for non-experimental casual studies. Cambridge, MA: NBER.
Chicago
Dehejia Rajeev H, Wahba Sadek and National Bureau Of Economic Research. 1998. Propensity score matching methods for non-experimental casual studies. Cambridge, MA: NBER.
Harvard
Dehejia R. H., Wahba Sadek and National Bureau Of Economic Research. (1998). Propensity score matching methods for non-experimental casual studies. Cambridge, MA: NBER.
MLA
Dehejia Rajeev H, Wahba Sadek and National Bureau Of Economic Research. Propensity score matching methods for non-experimental casual studies. Cambridge, MA: NBER. 1998.