พิมพ์ช่างทอง ด. CLUSTER ANALYSIS FOR MARKETING CAMPAIGN USING SOCIAL NETWORK. RMUTT-GBER [internet]. 2018 Jun. 28 [cited 2026 Sep. 22];13(1):139-50. available from: https://so03.tci-thaijo.org/index.php/RMUTT-Gber/article/view/241908