nakata, thinapan (2020) “Former Prime Minister H.E. General Prem Tinsulanonda and His Major Public Policies and Works (B.E.2523-2531)”, King Prajadhipok’s Institute Journal, 18(2), pp. 5–22. available at: https://so06.tci-thaijo.org/index.php/kpi_journal/article/view/244940 (accessed: 10 December 2025).