APA
Freeman R. e. a., National Bureau of Economic Research, . (2015). How does declining unionism affect the American middle class and intergenerational mobility?. Cambridge: NBER.
Chicago
Freeman Richard et al, National Bureau of Economic Research, . 2015. How does declining unionism affect the American middle class and intergenerational mobility?. Cambridge: NBER.
Harvard
Freeman R. e. a., National Bureau of Economic Research, . (2015). How does declining unionism affect the American middle class and intergenerational mobility?. Cambridge: NBER.
MLA
Freeman Richard et al, National Bureau of Economic Research, . How does declining unionism affect the American middle class and intergenerational mobility?. Cambridge: NBER. 2015.