APA
Collins W. J., National Bureau of Economic Research & Margo R. A. (2011). Race and home ownership from the civil war to the present. Cambridge: NBER.
Chicago
Collins William J, National Bureau of Economic Research and Margo Robert A. 2011. Race and home ownership from the civil war to the present. Cambridge: NBER.
Harvard
Collins W. J., National Bureau of Economic Research and Margo R. A. (2011). Race and home ownership from the civil war to the present. Cambridge: NBER.
MLA
Collins William J, National Bureau of Economic Research and Margo Robert A. Race and home ownership from the civil war to the present. Cambridge: NBER. 2011.