Challoner Jack. Science all around us, disney Children's encyclopedia. Euro Books.
Chicago-čujuhus (17. p.)Challoner Jack. Science All Around Us, Disney Children's Encyclopedia. India: Euro Books.
MLA-čujuhus (9. p.)Challoner Jack. Science All Around Us, Disney Children's Encyclopedia. Euro Books.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.