APA (7th ed.) Citation

Macquarrie, J. (1997). A guide to the sacraments. SCM Press.

Chicago Style (17th ed.) Citation

Macquarrie, John. A Guide to the Sacraments. London: SCM Press, 1997.

MLA (9th ed.) Citation

Macquarrie, John. A Guide to the Sacraments. SCM Press, 1997.