(en) Martin LC, Cooper R (juni 2011). From herbs to medicines: A world history of tea — From legend to healthy obsession. Alternative and Complementary Therapies17 (3): 162–8. ISSN: 1557-9085. DOI: 10.1089/act.2011.17307.
(en) Martin LC, Cooper R (juni 2011). From herbs to medicines: A world history of tea — From legend to healthy obsession. Alternative and Complementary Therapies17 (3): 162–8. ISSN: 1557-9085. DOI: 10.1089/act.2011.17307.