Susmita Susmita, Ayu Devita Citra Dewi. The Effect of Implementing Baby Gym on Gross Motor Development in Babies Aged 3-4 Months. Innovation [Internet]. 2024 Aug. 2 [cited 2026 Mar. 1];2(3):240-5. Available from: https://prin.or.id/index.php/Innovation/article/view/3131