APA-referens (7:e uppl.)

Merton, T., & Shannon, W. H. (1995). Witness to freedom: The letters of Thomas Merton in times of crisis (1st Harvest ed.). Harcourt Brace.

Chicago-referens (17:e uppl.)

Merton, Thomas, och William Henry Shannon. Witness to Freedom: The Letters of Thomas Merton in Times of Crisis. 1st Harvest ed. San Diego, Calif.: Harcourt Brace, 1995.

MLA-referens (8:e uppl.)

Merton, Thomas, och William Henry Shannon. Witness to Freedom: The Letters of Thomas Merton in Times of Crisis. 1st Harvest ed. Harcourt Brace, 1995.