World Patent Information. Pergamon Press - An Imprint of Elsevier Science.
Chicago-čujuhus (17. p.)World Patent Information. Pergamon Press - An Imprint of Elsevier Science.
MLA-čujuhus (9. p.)World Patent Information. Pergamon Press - An Imprint of Elsevier Science.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.