Eco, U. (1986). Art and beauty in the middle ages. Yale University.
Chicago-čujuhus (17. p.)Eco, Umberto. Art and Beauty in the Middle Ages. London: Yale University, 1986.
MLA-čujuhus (9. p.)Eco, Umberto. Art and Beauty in the Middle Ages. Yale University, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.