Hüllen, W. Roget's thesaurus, deconstructed: Werner Hüllen. Historical dictionaries and historical dictionary research : papers from the International Conference on Historical Lexicography and Lexicology, at the University of Leicester, 2002.(2004).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHüllen, Werner. "Roget's Thesaurus, Deconstructed: Werner Hüllen." Historical Dictionaries and Historical Dictionary Research : Papers from the International Conference on Historical Lexicography and Lexicology, at the University of Leicester, 2002.(2004) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रHüllen, Werner. "Roget's Thesaurus, Deconstructed: Werner Hüllen." Historical Dictionaries and Historical Dictionary Research : Papers from the International Conference on Historical Lexicography and Lexicology, at the University of Leicester, 2002.(2004), .