Crawford R J. Plastic engineering (3rd.). BH.
Chicago-čujuhus (17. p.)Crawford R J. Plastic Engineering. 3rd. Oxford: BH.
MLA-čujuhus (9. p.)Crawford R J. Plastic Engineering. 3rd. BH.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.