APA-čujuhus (7. p.)
Garrett, W. E. National Geographic: Vol. 159, no. 4, April 1981. National Geographic Society.
Chicago-čujuhus (17. p.)
Garrett, Wilbur E. National Geographic: Vol. 159, No. 4, April 1981. Washington, EUA: National Geographic Society.
MLA-čujuhus (9. p.)
Garrett, Wilbur E. National Geographic: Vol. 159, No. 4, April 1981. National Geographic Society.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.