APA
Engberg J. e. a., National Bureau Of Economic Research, . (2009). Estimation of causal effects in experiments with multiple so. Cambridge: NBER.
Chicago
Engberg John et al, National Bureau Of Economic Research, . 2009. Estimation of causal effects in experiments with multiple so. Cambridge: NBER.
Harvard
Engberg J. e. a., National Bureau Of Economic Research, . (2009). Estimation of causal effects in experiments with multiple so. Cambridge: NBER.
MLA
Engberg John et al, National Bureau Of Economic Research, . Estimation of causal effects in experiments with multiple so. Cambridge: NBER. 2009.
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