Sofia Hartati, Desy Safitri, Sri Nuraini, Taufik Rihatno, Arita Marini, Apri Wahyudi 2020. MODEL OF SOCIAL SKILLS FOR SIX YEARS OLD STUDENTS GRADE ONE AT ELEMENTARY SCHOOLS. International Journal of Advanced Science and Technology. 29, 06 (Apr. 2020), 1129 - 1135.