- Her Eternal Crown: Queen Marie of Romania and the Bahá'í Faith, by Della L. Marcus: Review, by Robert Postlethwaite (2000).
- Letters to Bahá'í princesses: Tablets revealed in honour of the women of Ibn-i Asdaq's household, by Dominic Parvis Brookshaw (2004). — A study and translation of 'Abdu'l-Baha's tablets to the daughters of Hand of the Cause of God, Ibn-...
- Queen Marie and the Baha'i Faith, by Robert Postlethwaite (1994). — On the first monarch to embrace the Baha'i Faith; the stature and the character of Queen Marie and h...
- Queen Marie of Romania: A Preliminary Bibliography, by Jan T. Jasion (1994). — Very few royals have left such a rich literary legacy as did Marie of Romania. She published novels,...
- Shoghi Effendi in Oxford, by Riaz Khadem, and Her Eternal Crown, Queen Marie of Romania and the Bahá'í Faith, by Della Marcus: Reviews, by Lil Osborn (2001).
- Translation List: Provisional Translations of Baháʼí Literature, Adib Masumian, trans. (2009-2023). — Index to talks, letters, and other items translated from Persian and Arabic to English by Adib Masum...
- Who Was a Bahá'í in the Upper Echelons of Qájár Iran?, by Moojan Momen (2023). — The nature of multiple religious identities in a traditional society; five criteria by which many in...
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