Esslemont, J. E. (1974). Baha'u'llah and the new era: An introduction to the Baha'i faith (4th rev. paper ed.). Baha'i Pub. Trust.
Lua i Stíl Chicago (17ú heag.)Esslemont, J. E. Baha'u'llah and the New Era: An Introduction to the Baha'i Faith. 4th rev. paper ed. Wilmette, Ill: Baha'i Pub. Trust, 1974.
Lua MLA (9ú heag.)Esslemont, J. E. Baha'u'llah and the New Era: An Introduction to the Baha'i Faith. 4th rev. paper ed. Baha'i Pub. Trust, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.