500 Fantastic Facts Chemistry. North Parade Publishing Ltd.
Chicago-čujuhus (17. p.)500 Fantastic Facts Chemistry. North Parade Publishing Ltd.
MLA-čujuhus (9. p.)500 Fantastic Facts Chemistry. North Parade Publishing Ltd.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.