APA
Gibbons C. E., Urbancic Michael B, Serrato Juan Carlos Suarez & National Bureau Of Economic Research. (2014). Broken or fixed effects?. Cambridge: NBER.
Chicago
Gibbons Charles E, Urbancic Michael B, Serrato Juan Carlos Suarez and National Bureau Of Economic Research. 2014. Broken or fixed effects?. Cambridge: NBER.
Harvard
Gibbons C. E., Urbancic Michael B, Serrato Juan Carlos Suarez and National Bureau Of Economic Research. (2014). Broken or fixed effects?. Cambridge: NBER.
MLA
Gibbons Charles E, Urbancic Michael B, Serrato Juan Carlos Suarez and National Bureau Of Economic Research. Broken or fixed effects?. Cambridge: NBER. 2014.
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