Febriana Monika Napitupulu, Sanggam Siahaan, and Bloner sinurat, “THE EFFECT OF JIGSAW TEACHING TECNIQUE ON STUDENTS’ ABILITY IN WRITING A DESCRIPTIVE TEXT AT ELEVENTH GRADE STUDENTS OF SMK GKPI 2 PEMATANGSIANTAR”, IJSET, vol. 4, no. 10, Dec. 2025.