Foster, R. (1978). The complete guide to Middle-earth: From The Hobbit to The Silmarillion. Allen & Unwin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFoster, Robert. The Complete Guide to Middle-earth: From The Hobbit to The Silmarillion. London ; Boston: Allen & Unwin, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFoster, Robert. The Complete Guide to Middle-earth: From The Hobbit to The Silmarillion. Allen & Unwin, 1978.
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