APA
Usui E., National Bureau of Economic Research, Shimizutani S. & Oshio T. (2016). Health capacity to work at older ages. Cambridge: NBER.
Chicago
Usui Emiko, National Bureau of Economic Research, Shimizutani Satoshi and Oshio Takashi. 2016. Health capacity to work at older ages. Cambridge: NBER.
Harvard
Usui E., National Bureau of Economic Research, Shimizutani S. and Oshio T. (2016). Health capacity to work at older ages. Cambridge: NBER.
MLA
Usui Emiko, National Bureau of Economic Research, Shimizutani Satoshi and Oshio Takashi. Health capacity to work at older ages. Cambridge: NBER. 2016.