Know your world extra. [Xerox Education Publications].
Chicago-čujuhus (17. p.)Know Your World Extra. [Middletown, CT]: [Xerox Education Publications].
MLA-čujuhus (9. p.)Know Your World Extra. [Xerox Education Publications].
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.