(2014). Cambridge essays on adult education. Cambridge University Press.
Chicago-čujuhus (17. p.)Cambridge Essays on Adult Education. Cambridge University Press, 2014.
MLA-čujuhus (9. p.)Cambridge Essays on Adult Education. Cambridge University Press, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.