Nicholson, R. A. (1921). Studies in Islamic mysticism. University Press.
芝加哥风格引文Nicholson, Reynold Alleyne. Studies in Islamic Mysticism. Cambridge [u.a.]: University Press, 1921.
MLA引文Nicholson, Reynold Alleyne. Studies in Islamic Mysticism. University Press, 1921.
警告：这些引文格式不一定是100％准确.
