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Michael A.M.A.RuggieroMichael A.M.A. i inni, A Higher Level Classification of All Living Organisms, „PLOS One”, 10 (4), 2015, art. nr e0119248, DOI: 10.1371/journal.pone.0119248, PMID: 25923521, PMCID: PMC4418965 [dostęp 2020-02-20](ang.).
Nawab JohnN.J.DarNawab JohnN.J., AbidA.HamidAbidA., MuzamilM.AhmadMuzamilM., Pharmacologic overview of Withania somnifera, the Indian Ginseng, „Cellular and Molecular Life Sciences”, 72, s. 4445–4460, DOI: 10.1007/s00018-015-2012-1, PMID: 26306935(ang.).
K.K.ChandrasekharK.K., JyotiJ.KapoorJyotiJ., SridharS.AnishettySridharS., A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults, „Indian Journal of Psychological Medicine”, 34 (3), 2012, s. 255–262, DOI: 10.4103/0253-7176.106022, PMID: 23439798(ang.).
SachinS.WankhedeSachinS. i inni, Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial, „Journal of the International Society of Sports Nutrition”, 12, 2015, s. 43, DOI: 10.1186/s12970-015-0104-9, PMID: 26609282(ang.).