Pramita, Rissa, and Yulkifli Yulkifli. “Validity and Practicality of the E-Book Science Model RADEC (Read-Answer-Discuss-Explain-Create) to Improve the 4C Skills of Students”. Jurnal Penelitian Pendidikan IPA 9, no. 10 (October 25, 2023): 8722–8729. Accessed October 8, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/4337.