Suwannaphuma, S., S. Phungphet, and L. Suksai. “Factors Affecting the Promotion of Agriculture Household Income in Chaiyaphum Province”. Governance Journal, vol. 9, no. 2, Dec. 2020, pp. 357-79, https://so01.tci-thaijo.org/index.php/gjournal-ksu/article/view/245344.