Penberthy W T, and Kirkland J B (2020 & 2012). Niacin. In Present Knowledge in Nutrition, J W Erdman, I MacDonald, S H Zeisel, and International Life Sciences Institute., eds. (Ames, Iowa, International Life Sciences Institute).
Penberthy W T (2018 & 2012). Niacin, Riboflavin, and Thiamine. In Biochemical, Physiological, and Molecular Aspects of Human Nutrition, M H Stipanuk, and M A Caudill, eds. (St. Louis, Mo., Elsevier/Saunders), pp. p.540-564.