APA
Heckman J. J., Schmierer Daniel A & National Bureau Of Economic Research. (2010). Tests of Hypotheses Arising in the Correlated Random Coeffic. Cambridge: NBER.
Chicago
Heckman James J, Schmierer Daniel A and National Bureau Of Economic Research. 2010. Tests of Hypotheses Arising in the Correlated Random Coeffic. Cambridge: NBER.
Harvard
Heckman J. J., Schmierer Daniel A and National Bureau Of Economic Research. (2010). Tests of Hypotheses Arising in the Correlated Random Coeffic. Cambridge: NBER.
MLA
Heckman James J, Schmierer Daniel A and National Bureau Of Economic Research. Tests of Hypotheses Arising in the Correlated Random Coeffic. Cambridge: NBER. 2010.
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