V B D. (1992). POWER ENGINEERING. V. B. D.
Chicago-čujuhus (17. p.)V B D. POWER ENGINEERING. V. B. D, 1992.
MLA-čujuhus (9. p.)V B D. POWER ENGINEERING. V. B. D, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.