World Health Organization. (2003). WHO guidelines on good agriculture and collection practices( GACP) for medical plants. World Health Organization.
Čikaški stil citiranja (17. izdanje)World Health Organization. WHO Guidelines on Good Agriculture and Collection Practices( GACP) for Medical Plants. Geneva: World Health Organization, 2003.
MLA način citiranja (8. izdanje)World Health Organization. WHO Guidelines on Good Agriculture and Collection Practices( GACP) for Medical Plants. World Health Organization, 2003.
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