A. Apsabra and K. Karyanti, “Efektivitas Teknik Problem Solving untuk Menurunkan Perilaku Prokrastinasi Akademik Peserta Didik Kelas X IIS 3 SMAN-1 Palangka Raya: The Effectiveness of Problem Solving Techniques to Reduce Academic Procrastination Behavior of Students in IIS 3 Class X-1 Palangka Raya”, Suluh J Bimbingan Konseling, vol. 4, no. 1, pp. 8–12, Aug. 2018.