(Ingelesez)Smith, Peter. (2000). «Calendar»A concise encyclopedia of the Bahá'í Faith. Oneworld Publications, 98-100 or. ISBN978-1-85168-184-6..
bahai-library.com
(Ingelesez)Buck, Christopher; Melton, J. Gordon. «Baha ́’í Calendar and Rhythms of Worship» (pdf) Religious Celebrations: An Encyclopedia of Holidays, Festivals, Solemn Observances, and Spiritual Commemorations.(Noiz kontsultatua: 2011).