APA (7th ed.) Citation

Tillich, P. (1963). The Eternal Now: Sermons. SCM Press.

Chicago Style (17th ed.) Citation

Tillich, Paul. The Eternal Now: Sermons. London: SCM Press, 1963.

MLA (9th ed.) Citation

Tillich, Paul. The Eternal Now: Sermons. SCM Press, 1963.

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