Nunan, D. (1996). Research methods in language learning. Cambridge University Press.
Chicago-čujuhus (17. p.)Nunan, David. Research Methods in Language Learning. Nueva York, Estados Unidos: Cambridge University Press, 1996.
MLA-čujuhus (9. p.)Nunan, David. Research Methods in Language Learning. Cambridge University Press, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.