R. O. Oktaviance, Merlina Sinabariba, Aprilita Br Sitepu, and Angelina Agatha Br Sembiring, “Description of Anxiety Level and Characteristics of Pregnant Mothers During the Covid-19 Pandemic at the Pratama Talia Clinic, Sub-District Pancur Batu Deli Serdang in 2022”, midwifery, vol. 10, no. 5, pp. 3524–3529, Nov. 2022.