2022. Confessions of a Child of the Half-Light (unpublished, 2022).
2018/1990. To Russia with Love: Journal of a Member of the Quddus Team (unpublished).
2016. A Love That Could Not Wait: The Remarkable Story of Knights of Baha’u’llah Catherine Heward Huxtable and Clifford Huxtable. One Voice Press: Maryland, 248 pages.
2012. A Celestial Burning: A Selective Study of the Writings of Shoghi Effendi (An Interdisciplinary Theological and Literary Critical Study). Baha’i Publishing Trust of India, 606 pages.
2010. Impressions from the Rock of Gibraltar: The Journal of a Travelling Teacher (unpublished).
1999. Under the Divine Lote Tree: Essays and Reflections. George Ronald: Oxford, 200 pages.
1997. Revisioning the Sacred: New Perspectives on a Bahá’í Theology (editor-contributor). Kalimat Press: Los Angeles, 231 pages.
1994. Dimensions in Spirituality: Reflections on the Meaning of Spiritual Life and Transformation in Light of the Bahá’í Faith. George Ronald: Oxford, 324 pages.