APA
Fletcher J., National Bureau of Economic Research, Hair N. L. & Wolfe B. L. (2012). Am I my brother's keeper? Sibling spillover effects. Cambridge: NBER.
Chicago
Fletcher Jason, National Bureau of Economic Research, Hair Nicole L and Wolfe Barbara L. 2012. Am I my brother's keeper? Sibling spillover effects. Cambridge: NBER.
Harvard
Fletcher J., National Bureau of Economic Research, Hair N. L. and Wolfe B. L. (2012). Am I my brother's keeper? Sibling spillover effects. Cambridge: NBER.
MLA
Fletcher Jason, National Bureau of Economic Research, Hair Nicole L and Wolfe Barbara L. Am I my brother's keeper? Sibling spillover effects. Cambridge: NBER. 2012.