Tschumi, R. R. Past and Present in Literature: Raymond R. Tschumi. Literary history and literary criticism : acta of the Ninth Congress. held at New York University, Aug. 25 to 31, 1963.(1966).

Tschumi, Raymond R. "Past and Present in Literature: Raymond R. Tschumi." Literary History and Literary Criticism : Acta of the Ninth Congress. Held at New York University, Aug. 25 to 31, 1963.(1966) .

Tschumi, Raymond R. "Past and Present in Literature: Raymond R. Tschumi." Literary History and Literary Criticism : Acta of the Ninth Congress. Held at New York University, Aug. 25 to 31, 1963.(1966), .