S. Mahmud, Z. B. A. Bakar, and H. B. Djaffri, “Bullying Type in Gender Perspective in Senior High School Students, South Sulawesi Province, Indonesia”, Int J Innov Educ Res, vol. 2, no. 12, pp. 39–47, Dec. 2014, doi: 10.31686/ijier.vol2.iss12.285.