APA Style

Khan, H, I. (1997). The inner life : three classic essays on the spiritual life by the beloved teacher who brought sufism to the West (First ed.). Boston: Shambhala.

MLA Style

Khan, Hazrat, Inayat. "The inner life : three classic essays on the spiritual life by the beloved teacher who brought sufism to the West". First ed. Boston: Shambhala, 1997. Text.