Gulen, M. F. (2004). Key concepts in the practice of sufism: Emerald hills of the heart. Fountain.
Chicago Style (17th ed.) CitationGulen, M. Fethullah. Key Concepts in the Practice of Sufism: Emerald Hills of the Heart. Fountain, 2004.
MLA (8th ed.) CitationGulen, M. Fethullah. Key Concepts in the Practice of Sufism: Emerald Hills of the Heart. Fountain, 2004.
Warning: These citations may not always be 100% accurate.