Nainggolan, S. P. . (2022) “Analysis of Mathematical Communication Ability Participants of the National Science Olympiad (OSN) for City/Regency Junior High Schools in Kupang Seen from a Gender Perspective”, Jurnal Pendidikan dan Konseling (JPDK), 4(4), pp. 4667–4673. doi: 10.31004/jpdk.v4i4.6205.