APA (7th ed.) Citation

O'Grady, C. (1970). An introduction to the Theology of Karl Barth. Corpus Books.

Chicago Style (17th ed.) Citation

O'Grady, Colm. An Introduction to the Theology of Karl Barth. New York: Corpus Books, 1970.

MLA (9th ed.) Citation

O'Grady, Colm. An Introduction to the Theology of Karl Barth. Corpus Books, 1970.

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