APA (7e ed.) Bronvermelding

Pennington, M. B. (1987). Thomas Merton, brother monk: The quest for true freedom. Harper & Row.

Chicago (17e ed.) Bronvermelding

Pennington, M. Basil. Thomas Merton, Brother Monk: The Quest for True Freedom. San Francisco: Harper & Row, 1987.

MLA (8e ed.) Bronvermelding

Pennington, M. Basil. Thomas Merton, Brother Monk: The Quest for True Freedom. Harper & Row, 1987.