APA-Zitierstil (7. Ausg.)

Gülen, F. Emerald hills of the heart: Key concepts in the practice of sufism (Rev. ed.). Tughra Books.

Chicago-Zitierstil (17. Ausg.)

Gülen, Fethullah. Emerald Hills of the Heart: Key Concepts in the Practice of Sufism. Rev. ed. Clifton: Tughra Books.

MLA-Zitierstil (9. Ausg.)

Gülen, Fethullah. Emerald Hills of the Heart: Key Concepts in the Practice of Sufism. Rev. ed. Tughra Books.