Ferguson, G. W. (1959). Signs and symbols in Christian art ([Popular ed. ; complete and unabridged].). Oxford University Press.
Chicago-referens (17:e uppl.)Ferguson, George Wells. Signs and Symbols in Christian Art. [Popular ed. ; complete and unabridged]. New York: Oxford University Press, 1959.
MLA-referens (9:e uppl.)Ferguson, George Wells. Signs and Symbols in Christian Art. [Popular ed. ; complete and unabridged]. Oxford University Press, 1959.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.