Weaver. The Government of Nature. University of Pittsburgh Press.
Chicago-čujuhus (17. p.)Weaver. The Government of Nature. University of Pittsburgh Press.
MLA-čujuhus (9. p.)Weaver. The Government of Nature. University of Pittsburgh Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.