Dewi Zakiyatus Sholihah, Naniek Sulistya Wardani, and Aris Kukuh Prasetyo. “The Development of E-Book Based on Problem and Project Based Learning Assisted by Book Creators”. JTP - Jurnal Teknologi Pendidikan, Vol. 24, no. 2, Aug. 2022, pp. 258-70, doi:10.21009/jtp.v24i2.28851.