APA
Zheng S., National Bureau of Economic Research, Sun C. & Kahn M. E. (2015). Self-protection investment exacerbates air pollution exposure inequality in Urban China. Cambridge: NBER.
Chicago
Zheng Siqi, National Bureau of Economic Research, Sun Cong and Kahn Matthew E. 2015. Self-protection investment exacerbates air pollution exposure inequality in Urban China. Cambridge: NBER.
Harvard
Zheng S., National Bureau of Economic Research, Sun C. and Kahn M. E. (2015). Self-protection investment exacerbates air pollution exposure inequality in Urban China. Cambridge: NBER.
MLA
Zheng Siqi, National Bureau of Economic Research, Sun Cong and Kahn Matthew E. Self-protection investment exacerbates air pollution exposure inequality in Urban China. Cambridge: NBER. 2015.