`Abdu'l-Bahá. (2006). Bahá'í World Faith. Project Gutenberg.
Chicago Style (17th ed.) Citation`Abdu'l-Bahá. Bahá'í World Faith. Project Gutenberg, 2006.
MLA (9th ed.) Citation`Abdu'l-Bahá. Bahá'í World Faith. Project Gutenberg, 2006.
Warning: These citations may not always be 100% accurate.