Rochmaniah, Ainur, Ferry Adhi Dharma, and Djarot Meidi Budi Utomo. “Buku Ajar Dasar-Dasar Public Relations”. Umsida Press (July 13, 2022): 1–63. Accessed February 11, 2026. https://press.umsida.ac.id/index.php/umsidapress/article/view/978-623-6292-23-5.