NLM in Focus. U.S. National Library of Medicine.
Chicago-čujuhus (17. p.)NLM in Focus. U.S. National Library of Medicine.
MLA-čujuhus (9. p.)NLM in Focus. U.S. National Library of Medicine.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.