Author: Kānsammanā thāng Wichākān Pračham Pī nai Wāra Khrop Rō̜p Pī thī 21 hǣng Kānsathāpanā Khana Sētthasāt, Čhulālongkō̜nmahāwitthayālai rư̄ang Sētthasāt Kānprakan (1991 Bangkok, Thailand)