“Learning Based on QR Code Technology to Improve Teacher Performance at SDN 90 SIPATANA”, Jour. of Peda. Inve. and Prac., vol. 14, pp. 138–146, Nov. 2022, Accessed: Oct. 15, 2025. [Online]. Available: https://mail.zienjournals.com/index.php/jpip/article/view/2878