Drew,Christina H. Duivenboden, J. V. B. (2000). Guidelines for evaluation of environmental health services. World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDrew,Christina H. Duivenboden, Jaco Van Bonnefoy,Xavier. Guidelines for Evaluation of Environmental Health Services. Denmark: World Health Organization, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDrew,Christina H. Duivenboden, Jaco Van Bonnefoy,Xavier. Guidelines for Evaluation of Environmental Health Services. World Health Organization, 2000.
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