APA (7th ed.) Citation

Zuckmayer, C., Barth, K., & Stoevesandt, H. (1982). A late friendship: The letters of Karl Barth and Carl Zuckmayer. Eerdmans.

Chicago Style (17th ed.) Citation

Zuckmayer, Carl, Karl Barth, and Hinrich Stoevesandt. A Late Friendship: The Letters of Karl Barth and Carl Zuckmayer. Grand Rapids, Mich: Eerdmans, 1982.

MLA (8th ed.) Citation

Zuckmayer, Carl, et al. A Late Friendship: The Letters of Karl Barth and Carl Zuckmayer. Eerdmans, 1982.