APA
Chen B. K., National Bureau of Economic Research, Gertler P. J. & Yang C. Y. (2013). Moral hazard and economies of scope in physician ownership of complimentary medical services. Cambridge: NBER.
Chicago
Chen Brian K, National Bureau of Economic Research, Gertler Paul J and Yang Chuh Yuh. 2013. Moral hazard and economies of scope in physician ownership of complimentary medical services. Cambridge: NBER.
Harvard
Chen B. K., National Bureau of Economic Research, Gertler P. J. and Yang C. Y. (2013). Moral hazard and economies of scope in physician ownership of complimentary medical services. Cambridge: NBER.
MLA
Chen Brian K, National Bureau of Economic Research, Gertler Paul J and Yang Chuh Yuh. Moral hazard and economies of scope in physician ownership of complimentary medical services. Cambridge: NBER. 2013.