National Confectioners Association. History of chocolate.
Chicago-čujuhus (17. p.)National Confectioners Association. History of Chocolate.
MLA-čujuhus (9. p.)National Confectioners Association. History of Chocolate.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.