Łopuszyńska, A. M., M. Pawlicki, E. Piekarska, M. Kozioł, A. Krasa, and H. Piecewicz-Szczęsna. “Methods of Contraception for Men”. Journal of Education, Health and Sport, vol. 10, no. 9, Sept. 2020, pp. 284-9, doi:10.12775/JEHS.2020.10.09.032.