Barry, J. R., & Wingrove, C. R. (1977). Let's learn about aging: A book of readings. John Wiley.
Chicago Style (17th ed.) ZitazioaBarry, John R., eta C. Ray Wingrove. Let's Learn About Aging: A Book of Readings. New York: John Wiley, 1977.
MLA (9th ed.) ZitazioaBarry, John R., eta C. Ray Wingrove. Let's Learn About Aging: A Book of Readings. John Wiley, 1977.
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