APA-čujuhus (7. p.)

Talk of the Nation/Science Friday (NPR).

Chicago-čujuhus (17. p.)

Talk of the Nation/Science Friday (NPR).

MLA-čujuhus (9. p.)

Talk of the Nation/Science Friday (NPR).

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.