Sternberg Perrakis, P. (2004) “The Four Levels of Detachment in Doris Lessing’s Shikasta: Phyllis Sternberg Perrakis”, The Journal of Bahá’í Studies. Ottawa, Ontario, Canada, 14(3-4), pp. 73–97. doi: 10.31581/jbs-14.3-4.3(2004).