Bromley, D. B. (1988). Human ageing: An introduction to gerontology (3rd ed.). Penguin Books.
Lua i Stíl Chicago (17ú heag.)Bromley, D. B. Human Ageing: An Introduction to Gerontology. 3rd ed. Harmondsworth, Eng.: Penguin Books, 1988.
Lua MLA (9ú heag.)Bromley, D. B. Human Ageing: An Introduction to Gerontology. 3rd ed. Penguin Books, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.