Dewi, D. T. K., W. Kusumawati, and I. Ismarwati. “Effect of Health Promotion and Whatsapp Reminder to Self-Efficacy of the Consumption of Fe Tablets Adherence Among Pregnant Women”. Journal of Health Technology Assessment in Midwifery, vol. 2, no. 1, May 2019, pp. 23-32, doi:10.31101/jhtam.683.