- Keven Brown. Hermes Trismegistus and Apollonius of Tyana in the Writings of Bahá'u'lláh (1997). — History of alchemy, magic, and the hermetic arts, and their reflection in the later teachings of Bah...
- Universal House of Justice. Hidden Word #63; quote from Promulgation of Universal Peace (2010-08-22). — Two minor questions regarding matters of translation: a passage from Hidden Words Persian #63, and a...
- Abdu'l-Bahá, Shoghi Effendi. Research Department of the Universal House of Justice, comp. Hidden Words: References of 'Abdu'l-Bahá and Shoghi Effendi (1998).
- Todd Lawson. Tablet (Lawh) in Bahá'í Usage (2005). — Meanings of the common Baha'i terms lawh (tablet), ketab (book), sahifa (treatise), resala (epistle)...
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