https://www.tci-thaijo.org/journals/JEEConline https://www.tci-thaijo.org/issues/social17-209 https://www.tci-thaijo.org/articles/social17-1718 https://www.tci-thaijo.org/articles/social17-1723 https://www.tci-thaijo.org/articles/social17-1737 https://www.tci-thaijo.org/articles/social17-1743 https://www.tci-thaijo.org/articles/social17-1747 https://www.tci-thaijo.org/articles/social17-1806 https://www.tci-thaijo.org/articles/social17-1807 https://www.tci-thaijo.org/articles/social17-1820 https://www.tci-thaijo.org/articles/social17-1821 https://www.tci-thaijo.org/articles/social17-1822