Sa’adah, Siti, and Achmad Syarief. “Photographic Elements of Celebrity Endorsement Content on Instagram towards Audience Online Engagement: A Literature Review”. ITB Graduate School Conference 1, no. 1 (October 13, 2022): 327–344. Accessed October 5, 2025. https://gcs.itb.ac.id/proceeding-igsc/index.php/igsc/article/view/30.