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Chipponi JX, Bleier JC, Santi MT, Rudman D (maio de 1982). «Deficiencies of essential and conditionally essential nutrients». The American Journal of Clinical Nutrition. 35 (5 Suppl): 1112–6. PMID6805293. doi:10.1093/ajcn/35.5.1112
Kendler BS (2006). «Supplemental conditionally essential nutrients in cardiovascular disease therapy». The Journal of Cardiovascular Nursing. 21 (1): 9–16. PMID16407731. doi:10.1097/00005082-200601000-00004
Lupton JR (fevereiro de 2004). «Microbial degradation products influence colon cancer risk: the butyrate controversy». The Journal of Nutrition. 134 (2): 479–82. PMID14747692. doi:10.1093/jn/134.2.479
Cummings JH, Macfarlane GT, Englyst HN (fevereiro de 2001). «Prebiotic digestion and fermentation». The American Journal of Clinical Nutrition. 73 (2 Suppl): 415S–420S. PMID11157351. doi:10.1093/ajcn/73.2.415s
Brownawell AM, Caers W, Gibson GR, Kendall CW, Lewis KD, Ringel Y, Slavin JL (maio de 2012). «Prebiotics and the health benefits of fiber: current regulatory status, future research, and goals». The Journal of Nutrition. 142 (5): 962–74. PMID22457389. doi:10.3945/jn.112.158147
«Phytochemicals». Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis, OR. Fevereiro de 2016. Consultado em 31 de dezembro de 2017
«Carotenoids». Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis, OR. Agosto de 2016. Consultado em 31 de dezembro de 2017
«Flavonoids». Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis, OR. Fevereiro de 2016. Consultado em 31 de dezembro de 2017
New Link in Chain of Life, Wall Street Journal, 2010-12-03, accessed 5 December 2010. "Until now, however, they were all thought to share the same biochemistry, based on the Big Six, to build proteins, fats and DNA."