APA (7th ed.) Citation

Grotta, D. (1978). The biography of J. R. R. Tolkien: Architect of Middle-Earth (2d ed.). Running Press.

Chicago Style (17th ed.) Citation

Grotta, Daniel. The Biography of J. R. R. Tolkien: Architect of Middle-Earth. 2d ed. Philadelphia: Running Press, 1978.

MLA (9th ed.) Citation

Grotta, Daniel. The Biography of J. R. R. Tolkien: Architect of Middle-Earth. 2d ed. Running Press, 1978.