APA
Druckenmiller H., National Bureau of Economic Research & Hsiang S. (2018). Accounting for unobservable heterogeneity in cross section using spatial first differences. Cambridge: NBER.
Chicago
Druckenmiller Hannah, National Bureau of Economic Research and Hsiang Solomon. 2018. Accounting for unobservable heterogeneity in cross section using spatial first differences. Cambridge: NBER.
Harvard
Druckenmiller H., National Bureau of Economic Research and Hsiang S. (2018). Accounting for unobservable heterogeneity in cross section using spatial first differences. Cambridge: NBER.
MLA
Druckenmiller Hannah, National Bureau of Economic Research and Hsiang Solomon. Accounting for unobservable heterogeneity in cross section using spatial first differences. Cambridge: NBER. 2018.