APA
Berndt E. R., National Bureau of Economic Research & Cockburn I. M. (2013). Price indexes for clinical trial research. Cambridge: NBER.
Chicago
Berndt Ernst R, National Bureau of Economic Research and Cockburn Iain M. 2013. Price indexes for clinical trial research. Cambridge: NBER.
Harvard
Berndt E. R., National Bureau of Economic Research and Cockburn I. M. (2013). Price indexes for clinical trial research. Cambridge: NBER.
MLA
Berndt Ernst R, National Bureau of Economic Research and Cockburn Iain M. Price indexes for clinical trial research. Cambridge: NBER. 2013.