APA-čujuhus (7. p.)
Water well technology / Handa, O.P: Oxford.
Chicago-čujuhus (17. p.)
Water Well Technology / Handa, O.P: Oxford.
MLA-čujuhus (9. p.)
Water Well Technology / Handa, O.P: Oxford.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.