Langer, E. J. Mindfulness. D A Capo Press.
Lua i Stíl Chicago (17ú heag.)Langer, Ellen J. Mindfulness. Boston: D A Capo Press.
Lua MLA (9ú heag.)Langer, Ellen J. Mindfulness. D A Capo Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.