Kahler, Erich. The Inward Turn of Narrative, translated from the original 1970 German by Richard Winston and Clara Winston. Princeton, Pennsylvania: PrincetonUniversity Press, 1973.
Low, Anthony. Aspects of Subjectivity: Society and Individuality from the Middle Ages to Shakespeare and Milton. Pittsburg, Pennsylvania: DuquesneUniversity Press, 2003.
Maus, Katharine Eisaman. Inwardness and Theater in the English Renaissance. Chicago and London: University of Chicago Press, 1995.
Ong, Walter J. "The Writer's Audience Is Always a Fiction." PMLA: Publications of the Modern Language Association, 90, 1 (January 1975): 9-22. Very accessible. Reprinted in An Ong Reader: Challenges for Further Inquiry, edited by Thomas J. Farrell and Paul A. Soukup (Cresskill, New Jersey: Hampton Press, 2002: 405-27).