Mussatto, Solange I.; Machado, Ercília M. S.; Martins, Silvia; Teixeira, José A. (2011). “Production, Composition, and Application of Coffee and Its Industrial Residues”. 《Food and Bioprocess Technology》 4 (5): 661–72. doi:10.1007/s11947-011-0565-z.
“FAOSTAT Core Trade Data (commodities/years)”. FAO Statistics Division. 2007. 2007년 10월 14일에 원본 문서에서 보존된 문서. 2007년 10월 24일에 확인함. To retrieve export values: Select the "commodities/years" tab. Under "subject", select "Export value of primary commodity." Under "country," select "World." Under "commodity," hold down the shift key while selecting all commodities under the "single commodity" category. Select the desired year and click "show data." A list of all commodities and their export values will be displayed.
Pendergrast, Mark (April 2009). “Coffee: Second to Oil?”. 《Tea & Coffee Trade Journal》: 38–41. 2014년 7월 10일에 원본 문서에서 보존된 문서. 2014년 5월 27일에 확인함.
“FAOSTAT Core Trade Data (commodities/years)”. FAO Statistics Division. 2007. 2007년 10월 14일에 원본 문서에서 보존된 문서. 2007년 10월 24일에 확인함. To retrieve export values: Select the "commodities/years" tab. Under "subject", select "Export value of primary commodity." Under "country," select "World." Under "commodity," hold down the shift key while selecting all commodities under the "single commodity" category. Select the desired year and click "show data." A list of all commodities and their export values will be displayed.
