- 1998-03-17. Tablet of 'Abdu'l-Baha Concerning Arius. Universal House of Justice. Arius was an early Christian theologian whose rejection of the Trinity, Abdu'l-Bahá said, destroyed the unity of the Church. UHJ-letters.
- 1991/1996. Compilation of Extracts Regarding Arius. Universal House of Justice, Research Department, Abdu'l-Bahá, Mírzá Abu'l-Faḍl Gulpáygání. Collection of materials regarding an early Christian theologian who, in expounding that Christ was subordinate to God the Father, discarded the trinity and fractured the unity of the Church. UHJ-letters.
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