“Penyuluhan Materi Manajemen Humas Dan Kepegawaian Pada Siswa SMK Perdana 1 Surabaya”. Science Contribution to Society Journal 3, no. 1 (July 31, 2023): 18–24. Accessed January 31, 2026. https://ejournal.unisbablitar.ac.id/index.php/scs/article/view/3241.