ebrary, Inc, Wilmoth, J. M., & Ferraro, K. F. (2007). Gerontology: Perspectives and issues (3rd ed.). Springer Pub..
Chicago-čujuhus (17. p.)ebrary, Inc, Janet M. Wilmoth, juo Kenneth F. Ferraro. Gerontology: Perspectives and Issues. 3rd ed. New York: Springer Pub., 2007.
MLA-čujuhus (9. p.)ebrary, Inc, et al. Gerontology: Perspectives and Issues. 3rd ed. Springer Pub., 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.