Thun sangkhom læ thun watthanatham nai rabop sētthakit læ kānčhatkān yuk mai: rūam botkhwām čhāk Kānprachum Wichākān Pračham pī 2547 Mahāwitthayālai Narēsūan by Mahāwitthayālai Narēsūan. Kānprachum Wichākān Pračham pī | Menrva Books