Liber Thesaurus

Scriptores thesauris saepe utuntur ut optimum certae notionis vocabulum inveniant.

• Collinson, W. E. 1939. "Comparative Synonymics: Some Principles and Illustrations." Transactions of the Philological Society 38, no. 1 (November): 54–77. doi:10.1111/j.1467-968X.1939.tb00202.x.
• Hassler, Gerda. 1999. "Lafaye's Dictionnaire des synonymes in the History of Semantics." In The Emergence of the Modern Language Sciences, ed. Sheli Embleton, John E. Joseph, et Hans-Josef Hiederehe, 1: 27–40. John Benjamins. ISBN 1556197594.
• Hüllen, Werner. 2004. "Roget's Thesaurus, deconstructed." In Historical Dictionaries and Historical Dictionary Research, papers from the International Conference on Historical Lexicography and Lexicology, University of Leicester, 2002, 83–94. Max Niemeyer Verlag. ISBN 3484391235.
• Hüllen, Werner. 2004. A history of Roget's thesaurus: origins, development, and design. Oxoniae: Oxford University Press. ISBN 0199254729.
• Hüllen, Werner. 2009. Networks and Knowledge in Roget's Thesaurus. Oxoniae: Oxford University Press. doi:10.1093/acprof:oso/9780199553235.001.0001. ISBN 0199553238.
• Noyes, Gertrude E. 1951. "The Beginnings of the Study of Synonyms in England." Publications of the Modern Language Association of America 66, no. 6 (December): 951–70. doi:10.2307/460151. JSTOR 460151.
• Stanley, Eric. 2004. "Polysemy and Synonymy and how these Concepts were Understood from the Eighteenth Century onwards in Treatises, and Applied in Dictionaries of English." In Historical Dictionaries and Historical Dictionary Research, papers from the International Conference on Historical Lexicography and Lexicology, University of Leicester, 2002, 157–84. Max Niemeyer Verlag. ISBN 3484391235.