Bahá'u'lláh. (1978). The seven valleys and The four valleys. Wilmette, Ill: Bahá'í Publishing Trust.
शिकागो स्टाइल उद्धरणBahá'u'lláh. The Seven Valleys and The Four Valleys. Wilmette, Ill: Bahá'í Publishing Trust, 1978.
एमएलए उद्धरणBahá'u'lláh. The Seven Valleys and The Four Valleys. Wilmette, Ill: Bahá'í Publishing Trust, 1978.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.