APA (7th ed.) Citation

Carpenter, H. (1978). Tolkien: A biography. Ballantine Books.

Chicago Style (17th ed.) Citation

Carpenter, Humphrey. Tolkien: A Biography. New York: Ballantine Books, 1978.

MLA (9th ed.) Citation

Carpenter, Humphrey. Tolkien: A Biography. Ballantine Books, 1978.

Warning: These citations may not always be 100% accurate.