“The Relationship Between Gadget Addiction and Visual Acuity in Elementary School Student of Mlirip II Mojokerto”. INTERNATIONAL JOURNAL OF NURSING AND MIDWIFERY SCIENCE (IJNMS), vol. 2, no. 03, Jan. 2019, pp. 217-21, https://doi.org/10.29082/IJNMS/2018/Vol2/Iss03/161.