Enduring questions in gerontology
Sheets Debra J., Bradley Dana Burr, Hendricks JonKniha
Citace v seznamu literatury:
SHEETS, Debra J.; BRADLEY, Dana Burr a HENDRICKS, Jon (ed.). Enduring questions in gerontology. New York: Springer Publishing Company, c2006. ISBN 0826164153. Dostupné také z: http://www.loc.gov/catdir/toc/fy0609/2005054063.html.