Zafrullah, Ersa Mayola, Rizki Tika Ayuni, and Cheequitha Adhelia. “Development of Instruments for Learning Independence for High School Students: Construct Validity and Reliability”. Beginner: Journal of Teaching and Education Management 1, no. 2 (November 28, 2023): 91–103. Accessed October 6, 2024. https://beginner.my.id/index.php/i/article/view/40.