Ferguson, G. W. (1959). Signs and symbols in Christian art ([Popular ed. ; complete and unabridged].). Oxford University Press.
Chicago-viite (17. p.)Ferguson, George Wells. Signs and Symbols in Christian Art. [Popular ed. ; complete and unabridged]. New York: Oxford University Press, 1959.
MLA-viite (9. p.)Ferguson, George Wells. Signs and Symbols in Christian Art. [Popular ed. ; complete and unabridged]. Oxford University Press, 1959.
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