https://romchip.org/ rajatoto slot gacor https://joce.petra.ac.id/ https://journals.codesria.org/ https://journal.gunabangsa.ac.id/ https://journals.innovareacademics.in/ slot gacor

[1]

R. Gorea, “Bullying in schools: Epidemiology and prevention”, IJETV, vol. 2, no. 02, pp. 6-9, Dec. 2016.