Andriyani, Rika, and Risa Pitriani. 2021. “The Relationship Between Mother’s Attitudes about Oxytocin Massage and the Smoothness of Exclusive Breastfeeding at PMB Ernita Pekanbaru”. Science Midwifery 9 (2):224-27. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/70.