APA
D'Haultfoeuille X., National Bureau of Economic Research, Maurel A. & Zhang Y. (2014). Extremal quantile regressions for selection models and the black-white wage gap. Cambridge: NBER.
Chicago
D'Haultfoeuille Xavier, National Bureau of Economic Research, Maurel Arnaud and Zhang Yichong. 2014. Extremal quantile regressions for selection models and the black-white wage gap. Cambridge: NBER.
Harvard
D'Haultfoeuille X., National Bureau of Economic Research, Maurel A. and Zhang Y. (2014). Extremal quantile regressions for selection models and the black-white wage gap. Cambridge: NBER.
MLA
D'Haultfoeuille Xavier, National Bureau of Economic Research, Maurel Arnaud and Zhang Yichong. Extremal quantile regressions for selection models and the black-white wage gap. Cambridge: NBER. 2014.