Shafer, R. 1. . . e. (1939). From Beowulf to Thomas Hardy. Doubleday, Doran & company, inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShafer, Robert 1889- ed. From Beowulf to Thomas Hardy. New York city: Doubleday, Doran & company, inc, 1939.
एमएलए (9वां संस्करण) प्रशस्ति पत्रShafer, Robert 1889- ed. From Beowulf to Thomas Hardy. Doubleday, Doran & company, inc, 1939.
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