Foster, R. (1978). The complete guide to Middle-earth: From The hobbit to The Silmarillion (Rev. & enl. ed.). Ballantine Books.
Chicago Style (17th ed.) CitationFoster, Robert. The Complete Guide to Middle-earth: From The Hobbit to The Silmarillion. Rev. & enl. ed. New York: Ballantine Books, 1978.
MLA (8th ed.) CitationFoster, Robert. The Complete Guide to Middle-earth: From The Hobbit to The Silmarillion. Rev. & enl. ed. Ballantine Books, 1978.
Warning: These citations may not always be 100% accurate.