APA
Dale S. B., Krueger Alan B & National Bureau Of Economic Research. (1999). Estimating the payoff to attending a more selective college: an application of selection on observables and unobservables. Cambridge, MA: NBER.
Chicago
Dale Stacy Berg, Krueger Alan B and National Bureau Of Economic Research. 1999. Estimating the payoff to attending a more selective college: an application of selection on observables and unobservables. Cambridge, MA: NBER.
Harvard
Dale S. B., Krueger Alan B and National Bureau Of Economic Research. (1999). Estimating the payoff to attending a more selective college: an application of selection on observables and unobservables. Cambridge, MA: NBER.
MLA
Dale Stacy Berg, Krueger Alan B and National Bureau Of Economic Research. Estimating the payoff to attending a more selective college: an application of selection on observables and unobservables. Cambridge, MA: NBER. 1999.