Aydin, N., and E. Manusov. “MATERIALISM, HEDONISM, SPIRITUALITY, AND SUBJECTIVE WELL-BEING: AN EMPIRICAL STUDY OF RISALE-I NUR (RN) READERS”. Al-Shajarah: Journal of the International Institute of Islamic Thought and Civilization (ISTAC), vol. 19, no. 2, May 2016, doi:10.31436/shajarah.v19i2.320.