APA (7th ed.) Citation

Ackroyd, P. R. (1983). Doors of perception: A guide to reading the Psalms. SCM Press.

Chicago Style (17th ed.) Citation

Ackroyd, Peter R. Doors of Perception: A Guide to Reading the Psalms. London: SCM Press, 1983.

MLA (9th ed.) Citation

Ackroyd, Peter R. Doors of Perception: A Guide to Reading the Psalms. SCM Press, 1983.

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