APA

Ferguson G. 1., . (1961). Signs & symbols in Christian art. New York: Oxford University Press.

Chicago

Ferguson George 1899-1973, . 1961. Signs & symbols in Christian art. New York: Oxford University Press.

Harvard

Ferguson G. 1., . (1961). Signs & symbols in Christian art. New York: Oxford University Press.

MLA

Ferguson George 1899-1973, . Signs & symbols in Christian art. New York: Oxford University Press. 1961.