Rohman, Khabibur, Turmudi Turmudi, Dasim Budimansyah, and Ernawulan Syaodih. “Development of a Productive Disposition Skills Instrument for Elementary School Students”. Jurnal Elementaria Edukasia 6, no. 2 (June 18, 2023): 650–660. Accessed April 27, 2025. https://ejournal.unma.ac.id/index.php/jee/article/view/5259.