World Book, I. (1996). The world book encyclopedia: Q-r. World Book.
Chicago-čujuhus (17. p.)World Book, Inc. The World Book Encyclopedia: Q-r. Chicago: World Book, 1996.
MLA-čujuhus (9. p.)World Book, Inc. The World Book Encyclopedia: Q-r. World Book, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.