Science Spin - Senior (Teacher's Edition). Weekly Reader Corporation.
Chicago-čujuhus (17. p.)Science Spin - Senior (Teacher's Edition). Weekly Reader Corporation.
MLA-čujuhus (9. p.)Science Spin - Senior (Teacher's Edition). Weekly Reader Corporation.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.