Lua APA (7ú heag.)
ebrary, Inc, & Álvarez, J. T. (2011). Social security: Background, issues and proposals. Nova Science Publishers.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Jacob T. Álvarez. Social Security: Background, Issues and Proposals. New York: Nova Science Publishers, 2011.
Lua MLA (9ú heag.)
ebrary, Inc, agus Jacob T. Álvarez. Social Security: Background, Issues and Proposals. Nova Science Publishers, 2011.
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