APA
Ahmad E. (., Hills J. (. e. & Dreze J. (. (1991). Social security in developing countries. Oxford: Clarendon Pr.
Chicago
Ahmad Ehtisham (ed), Hills John (ed) et.al and Dreze Jean (ed). 1991. Social security in developing countries. Oxford: Clarendon Pr.
Harvard
Ahmad E. (., Hills J. (. e. and Dreze J. (. (1991). Social security in developing countries. Oxford: Clarendon Pr.
MLA
Ahmad Ehtisham (ed), Hills John (ed) et.al and Dreze Jean (ed). Social security in developing countries. Oxford: Clarendon Pr. 1991.