Perdana, Teguh, and Achyar Zein. “Qana’ah As a Qur’anic Spiritual Disposition: Its Conceptual Relevance to Mental-Health Self-Diagnosis in Digital Contexts”. Journal of Indonesian Islamic Studies, vol. 5, no. 2, May 2026, pp. 949-60, doi:10.24256/jiis.v5i2.12283.