1.
Djianto NNN, Tjahyana LJ, Wijayanti CA. The Effectiveness of Eca Aura as Brand Ambassador for Derma Angel Among the People of Surabaya. joce [Internet]. 2025 Sep. 23 [cited 2026 Jul. 10];3(2):131-46. Available from: https://joce.petra.ac.id/index.php/joce/article/view/57