Barry, J. R., & Wingrove, C. R. (1977). Let's learn about aging: A book of readings. John Wiley.
Citazione stile Chigago Style (17a edizione)Barry, John R., e C. Ray Wingrove. Let's Learn About Aging: A Book of Readings. New York: John Wiley, 1977.
Citatione MLA (9a ed.)Barry, John R., e C. Ray Wingrove. Let's Learn About Aging: A Book of Readings. John Wiley, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.