Jonas, Klaus W. "Tonio Krdger (1903)." In Fifty Years of Mann Studies: A Bibliography of Criticism, pp. 131-32. Minneapolis: University of Minnesota Press, 1955.
Brief bibliography of essays on Tonio Kro'ger from the first half of the twentieth century.
Apter, T. E. "The Romantic Dilemma." In Thomas Mann: The Devil's Advocate, pp. 13-37. London: Macmillan Press Ltd., 1978.
Includes a discussion of the opposition between life and imagination as dramatized in Tonio Kro'ger.
Berendsohn, Walter E. "The World of Yesterday." In Thomas Mann:...
(The entire section is 521 words.)