World Health Organization. (2003). WHO guidelines on good agriculture and collection practices( GACP) for medical plants. World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. WHO Guidelines on Good Agriculture and Collection Practices( GACP) for Medical Plants. Geneva: World Health Organization, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWorld Health Organization. WHO Guidelines on Good Agriculture and Collection Practices( GACP) for Medical Plants. World Health Organization, 2003.
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