กิจฺจชโย (เพียรประกิจ) พระมหาภัทรชัย. 2019. “A Study of the Three Characteristics in Accordance With the Order of the Insight Knowledge States”. Mahamakut Graduate School Journal 14 (1):50-59. https://so04.tci-thaijo.org/index.php/mgsj/article/view/177337.