References
- “lupus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
- “lupus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
- lupus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
- lupus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
- “lupus”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
- “lupus”, in William Smith, editor (1848), A Dictionary of Greek and Roman Biography and Mythology, London: John Murray
De Vaan, Michiel (2008) “lupus”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, page 353 2003, Indo-European Linguistics, Michael Meier-Brügger, Matthias Fritz, and Manfred Mayrhofe (p. 99).