Iwanowicz-Palus, G. J., Krysa, J., Kipa, M., Dziaduszek, K. and Żółkiewska, B. (2017) “Physical activity in the perinatal period”, Journal of Education, Health and Sport, 7(8), pp. 1272–1289. Available at: https://apcz.umk.pl/JEHS/article/view/5019 (Accessed: 24 April 2024).