PARKER ,S P.,ED. (1982). MC GRAW HILL ENCYCLOPEDIA OF SCIENCE AND TECNOLOGY (INDEX). MCGRAW HILL BOOK CO.
Chicago-čujuhus (17. p.)PARKER ,S P.,ED. MC GRAW HILL ENCYCLOPEDIA OF SCIENCE AND TECNOLOGY (INDEX). NEW-YORK: MCGRAW HILL BOOK CO, 1982.
MLA-čujuhus (9. p.)PARKER ,S P.,ED. MC GRAW HILL ENCYCLOPEDIA OF SCIENCE AND TECNOLOGY (INDEX). MCGRAW HILL BOOK CO, 1982.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.