APA
Kremer M., National Bureau of Economic Research & Snyder C. (2015). Preventives versus treatments. Cambridge: NBER.
Chicago
Kremer Michael, National Bureau of Economic Research and Snyder Christopher. 2015. Preventives versus treatments. Cambridge: NBER.
Harvard
Kremer M., National Bureau of Economic Research and Snyder C. (2015). Preventives versus treatments. Cambridge: NBER.
MLA
Kremer Michael, National Bureau of Economic Research and Snyder Christopher. Preventives versus treatments. Cambridge: NBER. 2015.