APA-viite (7. p.)
ebrary, Inc, & Ditch, J. (1999). Introduction to social security: Policies, benefits, and poverty. Routledge.
Chicago-viite (17. p.)
ebrary, Inc, ja John Ditch. Introduction to Social Security: Policies, Benefits, and Poverty. London ; New York: Routledge, 1999.
MLA-viite (9. p.)
ebrary, Inc, ja John Ditch. Introduction to Social Security: Policies, Benefits, and Poverty. Routledge, 1999.
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