S. Suprihatiningsih, Tri Marhaeni Pudji Astuti, Agustinus Sugeng Priyanto, and Sunarto, “Da’wah bil hikmah in Macapat Serat Wulangreh Songs: Analysis of da’wah messages in javanese cultural expressions”, JID, vol. 46, no. 1, pp. 39–58, Apr. 2026.