APA (7th ed.) Citation

Roark, D. M. (1977). Dietrich Bonhoeffer. Word Books.

Chicago Style (17th ed.) Citation

Roark, Dallas M. Dietrich Bonhoeffer. Word Books, 1977.

MLA (9th ed.) Citation

Roark, Dallas M. Dietrich Bonhoeffer. Word Books, 1977.

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