Atchley, R. C. (1977). The social forces in later life: An introduction to social gerontology (2d ed.). Wadsworth Pub. Co..
Lua i Stíl Chicago (17ú heag.)Atchley, Robert C. The Social Forces in Later Life: An Introduction to Social Gerontology. 2d ed. Belmont, Calif.: Wadsworth Pub. Co., 1977.
Lua MLA (8ú heag.)Atchley, Robert C. The Social Forces in Later Life: An Introduction to Social Gerontology. 2d ed. Wadsworth Pub. Co., 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.