Wahyuni, L., I. Mangunatmadja, R. Kaban, E. Rachmawati, M. Harini, B. Laksmitasari, A. Geraldyne, I. Sangwidjojo, D. Utami, V. Poernomo, and A. Sudjono. “A Comparison of Objective and Subjective Measurements of Non-Nutritive Sucking in Preterm Infants”. Paediatrica Indonesiana, Vol. 62, no. 4, Aug. 2022, pp. 274-81, doi:10.14238/pi62.4.2022.274-81.