Mangaranto, Dumaria Laris, et al. “Development And Implementation of Project Based Learning LKPD in Science Subjects at Junior High School 6 Bitung ”. EUROPEAN JOURNAL OF INNOVATION IN NONFORMAL EDUCATION, vol. 3, no. 11, Nov. 2023, pp. 108-12, https://inovatus.es/index.php/ejine/article/view/2093.