Author: Kānʻaphiprāi thāng Wichākān Nư̄angnai Wāra Khroprō̜p 27 Pī hǣng Kānsathāpanā Khana Sētthasāt rư̄ang "Sētthakit Thai thưng Khrāo Yokkhrư̄ang?" (1997 Čhulālongkō̜nmahāwitthayālai)