Lua APA (7ú heag.)
Munnell, A. H., & Sass, S. A. (2008). Working longer: The solution to the retirement income challenge. Brookings Institution Press.
Lua i Stíl Chicago (17ú heag.)
Munnell, Alicia Haydock, agus Steven A. Sass. Working Longer: The Solution to the Retirement Income Challenge. Washington, D.C.: Brookings Institution Press, 2008.
Lua MLA (9ú heag.)
Munnell, Alicia Haydock, agus Steven A. Sass. Working Longer: The Solution to the Retirement Income Challenge. Brookings Institution Press, 2008.
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