Pratama, Danang Habib, et al. “The Need Analysis of PjBL Model Science E-Book Based Indigenous Knowledge on Process of Making Ulos Woven Cloth”. Jurnal Penelitian Pendidikan IPA, vol. 9, no. 12, Dec. 2023, pp. 10523-30, doi:10.29303/jppipa.v9i12.5904.