Akbar, Iqbal Maulana, et al. “Designing A Website Application For Diagnosing Respiratory Tract Diseases Using Forward Chaining Method And Certainty Factor”. Journal of Artificial Intelligence and Innovative Applications (JOAIIA), vol. 3, no. 1, Feb. 2022, pp. 1-8, https://openjournal.unpam.ac.id/index.php/JOAIIA/article/view/13368.