Dwienda Rictica, O., and Rita Afni. “Giving Guava to Increase HB Levels in Anemic Pregnant Women at PMB Dince Safrina Pekanbaru”. Journal of Midwifery and Nursing, vol. 3, no. 1, Jan. 2021, pp. 43-47, https://iocscience.org/ejournal/index.php/JMN/article/view/1154.