APA
Baker M., National Bureau of Economic Research & Milligan K. (2013). Boy-girl differences in parental time investments. Cambridge: NBER.
Chicago
Baker Michael, National Bureau of Economic Research and Milligan Kevin. 2013. Boy-girl differences in parental time investments. Cambridge: NBER.
Harvard
Baker M., National Bureau of Economic Research and Milligan K. (2013). Boy-girl differences in parental time investments. Cambridge: NBER.
MLA
Baker Michael, National Bureau of Economic Research and Milligan Kevin. Boy-girl differences in parental time investments. Cambridge: NBER. 2013.