Ghufron MA. The Implementation Of Clustering Technique To Improve Students’ Writing Skill In Descriptive Text Of The Eighth Graders Of MTs Darul Ulum Purwoasri Sukosewu Bojonegoro In The Academic Year Of 2012/2013. JPE [Internet]. 2014 Jan. 19 [cited 2025 Jul. 1];1(1):8-16. Available from: http://ejurnal.ikippgribojonegoro.ac.id/index.php/JPE/article/view/2