F. Istiqomah, D. . Noviarini, and M. B. Berutu, “Pengaruh Karakteristik Social Media Marketing Activities dan Perceived Usefulness terhadap Customer Engagement Instagram Bina Taruna Wiratama Academy Jakarta”, JIEMI, vol. 2, no. 2, pp. 4352–4376, Aug. 2026, doi: 10.63822/pygchs07.