Talbot, John M. (2004). Grounds for Agreement: The Political Economy of the Coffee Commodity Chain. Rowman & Littlefield. str. 50. »"So many people who have written about coffee have gotten it wrong. Coffee is not the second most valuable primary commodity in world trade, as is often stated. [...] It is not the second most traded commodity, a nebulous formulation that occurs repeatedly in the media. Coffee is the second most valuable commodity exported by developing countries."«
Villanueva, Cristina M.; Cantor, Kenneth P.; King, Will D.; Jaakkola, Jouni J.K.; Cordier, Sylvaine; Lynch, Charles F.; Porru, Stefano; Kogevinas, Manolis (2006). „Total and specific fluid consumption as determinants of bladder cancer risk”. International Journal of Cancer118 (8): 2040–2047. DOI:10.1002/ijc.21587. ISSN0020-7136. PMID16284957.
Cornelis, MC; El-Sohemy, A (2007). „Coffee, caffeine, and coronary heart disease”. Current Opinion in Clinical Nutrition and Metabolic Care10 (6): 745–751. DOI:10.1097/MCO.0b013e3282f05d81. PMID18089957.
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 Technology4 (5): 661–672. DOI:10.1007/s11947-011-0565-z.
„FAOSTAT Core Trade Data (commodities/years)”. FAO Statistics Division. 2007. Arhivirano iz originala na datum 2007-10-14. Pristupljeno October 24, 2007. 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.
Villanueva, Cristina M.; Cantor, Kenneth P.; King, Will D.; Jaakkola, Jouni J.K.; Cordier, Sylvaine; Lynch, Charles F.; Porru, Stefano; Kogevinas, Manolis (2006). „Total and specific fluid consumption as determinants of bladder cancer risk”. International Journal of Cancer118 (8): 2040–2047. DOI:10.1002/ijc.21587. ISSN0020-7136. PMID16284957.
Cornelis, MC; El-Sohemy, A (2007). „Coffee, caffeine, and coronary heart disease”. Current Opinion in Clinical Nutrition and Metabolic Care10 (6): 745–751. DOI:10.1097/MCO.0b013e3282f05d81. PMID18089957.
Pendergrast, Mark (April 2009). „Coffee: Second to Oil?”. Tea & Coffee Trade Journal: 38–41. Arhivirano iz originala na datum 2014-07-10. Pristupljeno May 27, 2014.
thecoffeefaq.com
Coffee and Health. Thecoffeefaq.com (2005-02-16). Retrieved January 22, 2013.
„FAOSTAT Core Trade Data (commodities/years)”. FAO Statistics Division. 2007. Arhivirano iz originala na datum 2007-10-14. Pristupljeno October 24, 2007. 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. Arhivirano iz originala na datum 2014-07-10. Pristupljeno May 27, 2014.
Villanueva, Cristina M.; Cantor, Kenneth P.; King, Will D.; Jaakkola, Jouni J.K.; Cordier, Sylvaine; Lynch, Charles F.; Porru, Stefano; Kogevinas, Manolis (2006). „Total and specific fluid consumption as determinants of bladder cancer risk”. International Journal of Cancer118 (8): 2040–2047. DOI:10.1002/ijc.21587. ISSN0020-7136. PMID16284957.
