Acra, A., jurdi, m., & mu’allem, h. (1990). Water disinfection by solar radiation: Assessment and application. idrc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAcra, A., m. jurdi, और h. mu’allem. Water Disinfection by Solar Radiation: Assessment and Application. canada: idrc, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAcra, A., et al. Water Disinfection by Solar Radiation: Assessment and Application. idrc, 1990.