Widjojo EA, Rachmat C A, Santosa RG. Implementasi Rocchio’s Classification dalam Mengkategorikan Renungan Harian Kristen. Ultimatics [Internet]. 2014 Jun. 1 [cited 2025 May 18];6(1):1-8. Available from: https://ejournals.umn.ac.id/index.php/TI/article/view/325