Kusumawati, Y. and Africia, F. (2020) “The IMPLEMENTATION OF A SMOKE-FREE AREA POLICY IN SMA NEGERI 2 NGANJUK”, INTERNATIONAL JOURNAL OF NURSING AND MIDWIFERY SCIENCE (IJNMS), 4(3), pp. 177-186. doi: 10.29082/IJNMS/2020/Vol4/Iss3/311.