APA
Kahn M. E., National Bureau of Economic Research, Sun W. & Zheng S. (2020). Clean air as an experience good in urban China. Cambridge: NBER.
Chicago
Kahn Matthew E, National Bureau of Economic Research, Sun Weizeng and Zheng Siqi. 2020. Clean air as an experience good in urban China. Cambridge: NBER.
Harvard
Kahn M. E., National Bureau of Economic Research, Sun W. and Zheng S. (2020). Clean air as an experience good in urban China. Cambridge: NBER.
MLA
Kahn Matthew E, National Bureau of Economic Research, Sun Weizeng and Zheng Siqi. Clean air as an experience good in urban China. Cambridge: NBER. 2020.