APA (7th ed.) Citation

Grotta, D. (1977). J. R. R. Tolkien: Architect of Middle Earth : a biography. Warner Books.

Chicago Style (17th ed.) Citation

Grotta, Daniel. J. R. R. Tolkien: Architect of Middle Earth : A Biography. New York: Warner Books, 1977.

MLA (8th ed.) Citation

Grotta, Daniel. J. R. R. Tolkien: Architect of Middle Earth : A Biography. Warner Books, 1977.