The Mediating Role of Attitude and Perceived Usefulness in the Relationship between Direct Marketing, Perceived Trust, Perceived Ease of Use, and Purchase Intention. IJEDR [Internet]. 2023 Dec. 1 [cited 2026 May 17];4(6):2922-38. Available from: https://journal.yrpipku.com/index.php/ijedr/article/view/3562