RATNAWATI D. THE EFFECT OF USING CO-OP CO-OP TECHNIQUE IN TEACHING WRITING NARRATIVE TEXT TO THE TENTH GRADERS OF SMAN 3 SIDOARJO. RT [Internet]. 27Jul.2015 [cited 28Apr.2024];3(2). Available from: https://ejournal.unesa.ac.id/index.php/retain/article/view/12391