http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
DUCKWORTH, George E.: -- The Nature of Roman comedy. A study -- in popular entertainment. - Prince- -- ton, New Jersey: Princeton Univ. Press -- 1952. XIII, 501 S., 4 Taf. 8° -- 1952:985. -- U.