APA
Chen L., National Bureau of Economic Research, Wang P. & Yao Y. (2017). Smoking, health capital, and longevity. Cambridge: NBER.
Chicago
Chen Li-Shiun, National Bureau of Economic Research, Wang Ping and Yao Yao. 2017. Smoking, health capital, and longevity. Cambridge: NBER.
Harvard
Chen L., National Bureau of Economic Research, Wang P. and Yao Y. (2017). Smoking, health capital, and longevity. Cambridge: NBER.
MLA
Chen Li-Shiun, National Bureau of Economic Research, Wang Ping and Yao Yao. Smoking, health capital, and longevity. Cambridge: NBER. 2017.