APA (7th ed.) Citation

Nicholls, W. (1969). The Pelican Guide to Modern Theology: Volume 1, Systematic and philosophical theology (1st published 1969.). Penguin Books.

Chicago Style (17th ed.) Citation

Nicholls, William. The Pelican Guide to Modern Theology: Volume 1, Systematic and Philosophical Theology. 1st published 1969. Harmondsworth (Inglaterra) [etc.]: Penguin Books, 1969.

MLA (9th ed.) Citation

Nicholls, William. The Pelican Guide to Modern Theology: Volume 1, Systematic and Philosophical Theology. 1st published 1969. Penguin Books, 1969.