World Health Organization. (2003). WHO guidelines on good agriculture and collection practices( GACP) for medical plants. World Health Organization.
Chicago Style (17. basım) AtıfWorld Health Organization. WHO Guidelines on Good Agriculture and Collection Practices( GACP) for Medical Plants. Geneva: World Health Organization, 2003.
MLA (8th ed.) AtıfWorld Health Organization. WHO Guidelines on Good Agriculture and Collection Practices( GACP) for Medical Plants. World Health Organization, 2003.
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