Fitria, Tira Nur. “A Sufistic Interpretation in Letto’s Songs: Exploring the Relationship Between Humans and God through Religious, Philosophical, and Spiritual Elements”. JETLEE : Journal of English Language Teaching, Linguistics, and Literature, vol. 3, no. 2, Apr. 2023, pp. 87-102, doi:10.47766/jetlee.v3i2.1409.