De Bot, K., & Makoni, S. (2005). Language and aging in multilingual contexts. Multilingual Matters Ltd..
Chicago-čujuhus (17. p.)De Bot, Kees, juo Sinfree Makoni. Language and Aging in Multilingual Contexts. Clevedon ; Buffalo: Multilingual Matters Ltd., 2005.
MLA-čujuhus (9. p.)De Bot, Kees, juo Sinfree Makoni. Language and Aging in Multilingual Contexts. Multilingual Matters Ltd., 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.