CHILDCRAFT: DISCOVERING SCIENCE VOL 8. World Book.
Chicago-čujuhus (17. p.)CHILDCRAFT: DISCOVERING SCIENCE VOL 8. World Book.
MLA-čujuhus (9. p.)CHILDCRAFT: DISCOVERING SCIENCE VOL 8. World Book.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.