Kosberg, J. I. (1994). International handbook on services for the elderly. Greenwood Press.
Lua i Stíl Chicago (17ú heag.)Kosberg, Jordan I. International Handbook on Services for the Elderly. Westport, Conn: Greenwood Press, 1994.
Lua MLA (9ú heag.)Kosberg, Jordan I. International Handbook on Services for the Elderly. Greenwood Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.