Awaludin, Asep. “Martin Seligman and Avicenna on Happiness”. Tasfiyah: Jurnal Pemikiran Islam 1, no. 1 (February 1, 2017): 1–30. Accessed July 4, 2024. https://ejournal.unida.gontor.ac.id/index.php/tasfiyah/article/view/1840.