- Ages and Cycles, by Moojan Momen (1995). Overview of the ideas of specific cycles and periods of time in Bahá'í belief.
- Covenant Library: Bahá'í Dates Calendar, Bahá'í World Centre, comp, Covenant Library, comp. (2024). Tables and charts of: Bahá'í Holy Days 2025-2064; Bahá'í months and years with their Gregorian conversion; and various references and quotations about the Bahá'í calendar.
- Explanation of a Zoroastrian Prophecy: Length of the "Bahá'í Cycle", by Karl Weaver (2017). Review of certain concepts in Judaism, Christianity, Islam, ancient astrology, and modern astronomical findings to shed light on Abdu'l-Bahá's interpretation of a prophecy by Zoroaster about the sun being brought to a standstill.
- Half Million Years, A, by Dana Paxson (2021). Exploring the 500,000-year Bahá’í cycle asserted by Shoghi Effendi, in two versions: academic-style essay form, and story-narrative form.
- Progressive Revelation, by John Ferraby (1954/1966). Short pamphlet on the oneness of religion, Messengers of God, and the religious cycle.
- Universal Cycles, The, by Abdu'l-Bahá, Shoghi Effendi, Universal House of Justice Iscander Micael Tinto, comp. (2013). Lengthy compilation on the cycles of time and eras in the world of existence, and stages of Bahá'í development.
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