APA (7th ed.) Citation

Lings, M. (1975). What is Sufism? / (by) Martin Lings. Allen and Unwin.

Chicago Style (17th ed.) Citation

Lings, Martin. What Is Sufism? / (by) Martin Lings. London: Allen and Unwin, 1975.

MLA (9th ed.) Citation

Lings, Martin. What Is Sufism? / (by) Martin Lings. Allen and Unwin, 1975.

Warning: These citations may not always be 100% accurate.