Ferguson, G. (1966). Signs and Symbols in Christian Art: By George Ferguson (Compl. and unabridged ed.). Oxford Univ. Press.
Chicago-referens (17:e uppl.)Ferguson, George. Signs and Symbols in Christian Art: By George Ferguson. Compl. and unabridged ed. New York: Oxford Univ. Press, 1966.
MLA-referens (8:e uppl.)Ferguson, George. Signs and Symbols in Christian Art: By George Ferguson. Compl. and unabridged ed. Oxford Univ. Press, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.