APA (7th ed.) Zitazioa
Bergmann, B. R., & Bush, J. (2000). Is social security broke?: A cartooon guide to the issues. University of Michigan Press.
Chicago Style (17th ed.) Zitazioa
Bergmann, Barbara R., eta Jim Bush. Is Social Security Broke?: A Cartooon Guide to the Issues. Ann Arbor: University of Michigan Press, 2000.
MLA (9th ed.) Zitazioa
Bergmann, Barbara R., eta Jim Bush. Is Social Security Broke?: A Cartooon Guide to the Issues. University of Michigan Press, 2000.
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