Donal Sinaga, Juster. “Tingkat Keterampilan Dasar Konseling Peserta Pendidikan Profesi Guru Bimbingan Dan Konseling: The Basic Counseling Skills Level for Participants in the Guidance and Counseling Teacher Professional Development Program”. Suluh: Jurnal Bimbingan Dan Konseling, vol. 5, no. 1, Sept. 2019, pp. 54-68, https://doi.org/10.33084/suluh.v5i1.1108.