Armbruster, C. J. (1967). The vision of Paul Tillich. Sheed and Ward.
Lua i Stíl Chicago (17ú heag.)Armbruster, Carl J. The Vision of Paul Tillich. New York: Sheed and Ward, 1967.
Lua MLA (9ú heag.)Armbruster, Carl J. The Vision of Paul Tillich. Sheed and Ward, 1967.
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