Citação norma APA
ebrary, Inc, & Ditch, J. (1999). Introduction to social security: Policies, benefits, and poverty. Routledge.
Citação norma Chicago
ebrary, Inc, and John Ditch. Introduction to Social Security: Policies, Benefits, and Poverty. London ; New York: Routledge, 1999.
Citação norma MLA
ebrary, Inc, and John Ditch. Introduction to Social Security: Policies, Benefits, and Poverty. Routledge, 1999.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.