Grolier International. (1987). Grolier academic encyclopedia: Vol : 17. Grolier International.
Chicago-čujuhus (17. p.)Grolier International. Grolier Academic Encyclopedia: Vol : 17. USA: Grolier International, 1987.
MLA-čujuhus (9. p.)Grolier International. Grolier Academic Encyclopedia: Vol : 17. Grolier International, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.