- Principios de Administración Bahá'í (Una compilación), by Bahá'u'lláh, Abdu'l-Bahá, Shoghi Effendi (1961). — Spanish translation of Principles of Baha'i Administration
- Principles of Bahá'í Administration, by Bahá'u'lláh, Abdu'l-Bahá, Shoghi Effendi National Spiritual Assembly of the Bahá'ís of the United Kingdom, comp. (1950/1973). — A guide to procedure in the life and organic activity of the Baha'i community, prepared from three m...
|