Walton, L. R. (1988). How you can live six extra years. Woodbridge Press.
Lua i Stíl Chicago (17ú heag.)Walton, Lewis R. How You Can Live Six Extra Years. Woodbridge Press, 1988.
Lua MLA (9ú heag.)Walton, Lewis R. How You Can Live Six Extra Years. Woodbridge Press, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.