Sunaryo, Deni. “Stock Return Problems In The Coal Sector: A Case Study Of The Use Of Price Earning Ratio And Firm Size Moderation”. Asean International Journal of Business 1, no. 2 (July 26, 2022): 104–123. Accessed June 15, 2025. https://journal.adpebi.com/index.php/AIJB/article/view/139.