Rohaya R, Ana Persari D, Novita N, Wahyuni S, Jamila J, Kamalia R. The Effect Of Counterpressure With A Birthball On Reducing Labor Pain During The First Active Phase: The Effect Of Counterpressure With A Birthball On Reducing Labor Pain During The First Active Phase. NURSING UPDATE [Internet]. 2024 Mar. 29 [cited 2026 Apr. 23];15(1):114-23. Available from: https://www.ojsnhm.com/index.php/NU/article/view/1966