มหามนตรี ว. “A Proposition Regarding the City Name ‘Phrip-Phri’ (Phetchaburi) Based on a Historical and Phonetic Perspective”. Journal of the Faculty of Arts, Silpakorn University, vol. 39, no. 2, Apr. 2019, pp. 180-12, https://so04.tci-thaijo.org/index.php/jasu/article/view/184976.