Novitawati, N., Wamaungu, J. A. and Astuti, S. W. (2019) “Developing Early Childhood Ability in Understanding Rules Using Combination of Role-Playing Model and Question-Answer Method Through Medium of Traffic Signs”, Journal of K6 Education and Management, 1(2), pp. 11-18. doi: 10.11594/jk6em.01.02.03.