APA
Hafner T., National Bureau of Economic Research & Popp D. (2011). China and India as suppliers of affordable medicines to developing countries. Cambridge: NBER.
Chicago
Hafner Tamara, National Bureau of Economic Research and Popp David. 2011. China and India as suppliers of affordable medicines to developing countries. Cambridge: NBER.
Harvard
Hafner T., National Bureau of Economic Research and Popp D. (2011). China and India as suppliers of affordable medicines to developing countries. Cambridge: NBER.
MLA
Hafner Tamara, National Bureau of Economic Research and Popp David. China and India as suppliers of affordable medicines to developing countries. Cambridge: NBER. 2011.