Afdal, A., Wibowo, T. H., Alfia, V. and Maysitoh, M. (2019) “How assertive behavior differences among Minang, Malay, Batak and Kerinci student’s culture?”, COUNS-EDU: The International Journal of Counseling and Education, 4(4), pp. 134–139. doi: 10.23916/0020190423540.