Tea Research Institute of Sri Lanka & Tea Research Institute of Ceylon. The Tea quarterly.
Čikaški stil citiranja (17. izdanje)Tea Research Institute of Sri Lanka i Tea Research Institute of Ceylon. The Tea Quarterly. St. Coombs, Talawakele, Tea Research Institute of Sri Lanka.
MLA način citiranja (8. izdanje)Tea Research Institute of Sri Lanka i Tea Research Institute of Ceylon. The Tea Quarterly.
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