APA (7th ed.) Citation

Lewis, C. S., & Hooper, W. (2000). Collected letters / edited by Walter Hooper. HarperCollins.

Chicago Style (17th ed.) Citation

Lewis, C. S., and Walter Hooper. Collected Letters / Edited by Walter Hooper. London: HarperCollins, 2000.

MLA (9th ed.) Citation

Lewis, C. S., and Walter Hooper. Collected Letters / Edited by Walter Hooper. HarperCollins, 2000.

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