Oklidiana E, Haryanto B. Kotler and Fox Marketing Management Model in Islamic Boarding Schools to Increase the Number of Santri: Model Manajemen Pemasaran Kotler dan Fox di Pondok Pesantren Darut Taqwa Ponorogo untuk Meningkatkan Jumlah Santri. ijins [Internet]. 2026 Aug. 31 [cited 2026 Sep. 6];27(2):10.21070/ijins.v27i2.1335. Available from: https://ijins.umsida.ac.id/index.php/ijins/article/view/1335