NUR KUSUMA, INDRA. 2017. “THE DEVELOPMENT OF DIGITAL BOOK BASED ON CONTEXTUAL LEARNING ON MOMENTUM AND IMPULS AS LEARNING MEDIA OF SENIOR HIGH SCHOOL STUDENTS”. IPF: Inovasi Pendidikan Fisika 6 (3). https://ejournal.unesa.ac.id/index.php/inovasi-pendidikan-fisika/article/view/21394.