M. R. Utama and Heriyah Oktaviani, “The Implementation of the Restitution Triangle in Instilling Discipline of Congregational Obligatory Prayers at Pondok Pesantren Tahfidz Qur’an Lembah Serunting”, TOFEDU, vol. 4, no. 7, pp. 2919–2926, Aug. 2025.