Puisuwan, Pattaraporn, Supinda Rithichan, Narin Chumnandoo, and Sopana Sawetkochakul. “Marketing Mix Strategy to Enhance Competitive Advantage of Organic Pig Manure Fertilizers Business from Biogas Farms in Kanchanaburi Province”. Journal of Multidisciplinary in Humanities and Social Sciences 6, no. 5 (October 25, 2023): 2813–2829. accessed September 22, 2026. https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/267627.