Metcadd Edds. (1979). WASTE WATER ENGINEERING. TATA MCGRAW.
Chicago-čujuhus (17. p.)Metcadd Edds. WASTE WATER ENGINEERING. TATA MCGRAW, 1979.
MLA-čujuhus (9. p.)Metcadd Edds. WASTE WATER ENGINEERING. TATA MCGRAW, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.