APA-viite (7. p.)
Hoffman, S. D., & Seidman, L. S. (2003). Helping working families: The earned income tax credit. W.E. Upjohn Institute for Employment Research.
Chicago-viite (17. p.)
Hoffman, Saul D., ja Laurence S. Seidman. Helping Working Families: The Earned Income Tax Credit. Kalamazoo, Mich.: W.E. Upjohn Institute for Employment Research, 2003.
MLA-viite (9. p.)
Hoffman, Saul D., ja Laurence S. Seidman. Helping Working Families: The Earned Income Tax Credit. W.E. Upjohn Institute for Employment Research, 2003.
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