Cieślak, D., and B. Nieradko-Iwanicka. “β-Hydroxy β-Methylbutyrate (HMB) Supplementation During Pregnancy and Perinatal Period in Animals Studies and Possible Application in Humans”. Journal of Education, Health and Sport, vol. 8, no. 3, Feb. 2018, pp. 11-18, https://apcz.umk.pl/JEHS/article/view/5304.