Labiru, L. 2014. Pengaruh layanan konseling dan motivasi berprestasi belajar siswa terhadap hasil belajar matematika (The Effect of Counseling Service and Learning Achievement Motivation towards Mathematics Learning Outcomes). Jurnal Penelitian Pendidikan. 14, 1 (Jun. 2014), 76–88. DOI:https://doi.org/10.17509/jpp.v14i1.3214.