THE WORLD BOOK ENCYCLOPEDIA. (1989). The world book encyclopedia: Research guide/index. World Book.
Chicago-čujuhus (17. p.)THE WORLD BOOK ENCYCLOPEDIA. The World Book Encyclopedia: Research Guide/index. Chicago: World Book, 1989.
MLA-čujuhus (9. p.)THE WORLD BOOK ENCYCLOPEDIA. The World Book Encyclopedia: Research Guide/index. World Book, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.