Lewis, N. (1978). Word Power Made Easy. Profile Books.
Chicago-čujuhus (17. p.)Lewis, Norman. Word Power Made Easy. London: Profile Books, 1978.
MLA-čujuhus (9. p.)Lewis, Norman. Word Power Made Easy. Profile Books, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.