Gaya APA

Kelly, G, B., Nelson, F, B. (1995). A Testament to Freedom : the essential writings of Dietrich Bonhoeffer (Revised Edition). New York: Harper San Francisco.

Gaya MLA

Kelly, Geffrey, B.., Nelson, F., Burton. "A Testament to Freedom : the essential writings of Dietrich Bonhoeffer". Revised Edition New York: Harper San Francisco, 1995. Text.