Susiyani, Retno. 2022. “Upaya Peningkatan Hasil Belajar IPA Melalui Model Problem Based Learning ( PBL) Tipe Kooperatif Two Stay Two Stray ( TSTS )”. JURNAL LENTERA : Kajian Keagamaan, Keilmuan Dan Teknologi 21 (2), 171-81. https://www.ejournal.staimnglawak.ac.id/index.php/lentera/article/view/653.