(2009). Calcium and Magnesium in Drinking-Water.
Chicago-čujuhus (17. p.)Calcium and Magnesium in Drinking-Water. 2009.
MLA-čujuhus (9. p.)Calcium and Magnesium in Drinking-Water. 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.