APA
Lundberg S., National Bureau of Economic Research & Pollak R. A. (2013). Cohabitation and the uneven retreat from marriage in the U.S.,1950-2010. Cambridge: NBER.
Chicago
Lundberg Shelly, National Bureau of Economic Research and Pollak Robert A. 2013. Cohabitation and the uneven retreat from marriage in the U.S.,1950-2010. Cambridge: NBER.
Harvard
Lundberg S., National Bureau of Economic Research and Pollak R. A. (2013). Cohabitation and the uneven retreat from marriage in the U.S.,1950-2010. Cambridge: NBER.
MLA
Lundberg Shelly, National Bureau of Economic Research and Pollak Robert A. Cohabitation and the uneven retreat from marriage in the U.S.,1950-2010. Cambridge: NBER. 2013.