?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Joko&rft.au=Soebagyo%2C+Joko&rft.aulast=Soebagyo&rft.date=18+January+2023&rft.pages=67-76&rft.volume=7&rft.issue=1&rft.atitle=The+Influence+of+Self-Confidence+on+The+Mathematical+Reasoning+Ability+of+Junior+High+School+Students&rft.issn=2580-2216&rft.title=Prima%3A+Jurnal+Pendidikan+Matematika&rft.genre=article