Acra, A., jurdi, m., & mu’allem, h. (1990). Water disinfection by solar radiation: Assessment and application. idrc.
Chicago-čujuhus (17. p.)Acra, A., m. jurdi, juo h. mu’allem. Water Disinfection by Solar Radiation: Assessment and Application. canada: idrc, 1990.
MLA-čujuhus (9. p.)Acra, A., et al. Water Disinfection by Solar Radiation: Assessment and Application. idrc, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.