1. A. Farah , Nutritional and health effects of coffee , in Achieving Sustainable Cultivation of Coffee Breeding and quality traits , ed. P. Lashermes , Burleigh Dodds Science Publishing , Cambridge , 2017
2. International Coffee Organization , World Coffee Consumption , 2019 . http://www.ico.org (accessed on 11 March 2020)
3. United States Department of Agriculture , USDA Food Composition Database , 2019 https://ndb.nal.usda.gov/ndb (accessed on 1 February 2019)
4. National Coffee Association , National Coffee Drinking Trends , 2018 . http://www.ncausa.org (accessed 5 February 2019)
5. Specialty Coffee Association of America , U.S Specialty coffees , 2015 . http://scaa.org/?page=resources&d=facts-and-figures (accessed 1 May 2019)