Losonsky, Michael, 1999, "Introduction" to Wilhelm von Humboldt "On Language", Cambridge, New York: Cambridge University Press
Miller, Robert L., 1968, The Linguistic Relativity Principle and Humboldtian Ethnolinguistics, The Hague and Paris: Mouton.
Olson, Kenneth Russell, 1978, Wilhelm von Humboldt's Philosophy of Language, Ph.D. Thesis, Dept. of German Studies, Stanford University.
Sweet, Paul S., 1978-80, Wilhelm von Humboldt A Biography, 2 vols., Columbus, Ohio: Ohio University Press
Wilhelm von Humboldt., 1854 The Spheres and Duties of Government, translated from the German by Joseph Coulthard, London: Chapman. Reprint: Bristol: Thoemmes Press, 1994
___., 1997.Essays on Language, T. Harden and D. Farrelly (eds), Frankfurt, Berlin, Bern, New York: P. Lang.
__.,1999. On Language: On the Diversity of Human Language Construction and its Influence on the Mental Development of the Human Species, Michael Losonsky (ed.), translated by Peter Heath, Cambridge Texts in the History of Philosophy, Cambridge: Cambridge University Press.
__., 2000 "On the Task of the Historian", Linda DeMichiel (trans.), in The Hermeneutics Reader, Kurt Mueller-Vollmer (ed.), New York: Continuum,
