Duckworth, V., & Tummons, J. (2010). Contemporary issues in lifelong learning. McGraw-Hill : Open University Press.
Chicago-čujuhus (17. p.)Duckworth, Vicky, juo Jonathan Tummons. Contemporary Issues in Lifelong Learning. Berkshire, England: McGraw-Hill : Open University Press, 2010.
MLA-čujuhus (9. p.)Duckworth, Vicky, juo Jonathan Tummons. Contemporary Issues in Lifelong Learning. McGraw-Hill : Open University Press, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.