APA (7th ed.) Citation

(1966). I knew Dietrich Bonhoeffer. Collins [u.a.].

Chicago Style (17th ed.) Citation

I Knew Dietrich Bonhoeffer. London: Collins [u.a.], 1966.

MLA (9th ed.) Citation

I Knew Dietrich Bonhoeffer. Collins [u.a.], 1966.