Stefano wa Perm
Ferguson, Charles. 1971. St. Stefan of Perm and applied linguistics.  (Originally published in 1967, in To Honor Roman Jakobson, ed. by Morris Halle, pp. 643–653.  The Hague: Mouton.  Also reprinted in 1968 Language Problems of Developing Nations, ed. by Joshua Fishman, Charles Ferguson, and J. Das Gupta, pp. 27–35. New York Wiley and Sons.) Language Structure and Language Use: Essays by Charles Ferguson, ed. by Answar S. Dil, pp. 197–218.  Stanford: Stanford University Press.