↑Mandé Michelle Scheepmaker et Neil Travis Gower, « The Quality of Selected South African and International Homoeopathic Mother Tinctures », African Journal of Traditional, Complementary, and Alternative Medicines, vol. 8, no 5 Suppl, , p. 46–52 (ISSN0189-6016, PMID22754057, PMCID3252726, DOI10.4314/ajtcam.v8i5S.14, lire en ligne, consulté le )