APA (7th ed.) Citation

Dougan, A. (1978). 40 days: An account of a discipline. Gnostic Press.

Chicago Style (17th ed.) Citation

Dougan, Abdullah. 40 Days: An Account of a Discipline. London [u.a.]: Gnostic Press, 1978.

MLA (9th ed.) Citation

Dougan, Abdullah. 40 Days: An Account of a Discipline. Gnostic Press, 1978.