Duckworth, V., & Tummons, J. (2010). Contemporary issues in lifelong learning. McGraw-Hill : Open University Press.
Lua i Stíl Chicago (17ú heag.)Duckworth, Vicky, agus Jonathan Tummons. Contemporary Issues in Lifelong Learning. Berkshire, England: McGraw-Hill : Open University Press, 2010.
Lua MLA (9ú heag.)Duckworth, Vicky, agus Jonathan Tummons. Contemporary Issues in Lifelong Learning. McGraw-Hill : Open University Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.