A. Pipingas, D. A. Camfield, C. Stough, A. B. Scholey, K. H. Cox, D. White, J. Sarris, A. Sali, and H. Macpherson, «Effects of Multivitamin, Mineral and Herbal Supplement on Cognition in Younger Adults and the Contribution of B Group Vitamins». Human Psychopharmacology 29, no. 1 (Jan. 2014): 73–82.