Suhendi, and Norhanifah Murli. “Research Opportunities for Application of Gamification Models With VR for Crop Cultivation: A Systematic Literature Review”. International Journal of Integrated Engineering, vol. 15, no. 3, Oct. 2023, pp. 285-91, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/14586.