APA (7th ed.) Citation

Carpenter, H. (1977). J.R.R. Tolkien : a biography / by Humphrey Carpenter: A biography. Allen and Unwin.

Chicago Style (17th ed.) Citation

Carpenter, Humphrey. J.R.R. Tolkien : A Biography / by Humphrey Carpenter: A Biography. London: Allen and Unwin, 1977.

MLA (9th ed.) Citation

Carpenter, Humphrey. J.R.R. Tolkien : A Biography / by Humphrey Carpenter: A Biography. Allen and Unwin, 1977.

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