Anggereni, K., P. Lestari, and S. . “The Relation Between Working Time of A Mother With the Success of Exclusive Breastfeeding in Bergas Lor Village, Bourgas District”. KnE Life Sciences, Vol. 4, no. 10, Mar. 2019, pp. 57–62, doi:10.18502/kls.v4i10.3768.