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Iking, Petra. Strukturen gestörter Kommunikation in den Dramen Peter Shaffers. Essen: Blaue Eule, 1989.
Jones, Daniel R. "Peter Shaffer's Continued Quest for God in Amadeus." Comparative Drama 21.2 (1987): 145-155
Klein, Dennis A. Peter Shaffer. New York: Twayne, 1993.
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Osterwalder, Hans. "Zwischen epischem und totalem Theater: Peter Shaffers Suche nach dem Numinosen." Zeitschrift für Anglistik und Amerikanistik 43.3 (1995): 234-43.
Page, Malcom and Virginia Cooke. File on Shaffer London: Methuen, 1987.
Plunka, Gene A. Peter Shaffer. Roles, Rites, and Rituals in the Theater. London and Toronto: Associated University Presses, 1988.
Schnierer, Peter Paul. "The Conventional Comedies of Bond and Shaffer." New Forms of Comedy. Contemporary Drama in English 1. Ed. Bernhard Reitz. Trier: Wissenschaftlicher Verlag Trier, 1994. 23-32.