एपीए उद्धरण

Richardson, J. H. Economic and finanical aspects of social security: An international survey.

शिकागो स्टाइल उद्धरण

Richardson, J. Henry. Economic and Finanical Aspects of Social Security: An International Survey.

एमएलए उद्धरण

Richardson, J. Henry. Economic and Finanical Aspects of Social Security: An International Survey.