APA (7th ed.) Citation

Duriez, C. (2003). J. R. R. Tolkien and C. S. Lewis: The story of their friendship (1. publ.). Sutton.

Chicago Style (17th ed.) Citation

Duriez, Colin. J. R. R. Tolkien and C. S. Lewis: The Story of Their Friendship. 1. publ. Stroud: Sutton, 2003.

MLA (8th ed.) Citation

Duriez, Colin. J. R. R. Tolkien and C. S. Lewis: The Story of Their Friendship. 1. publ. Sutton, 2003.

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