APA (7th ed.) Citation

Lewis, C. S., Martindale, W., & Root, J. (1989). The quotable Lewis. Tyndale House.

Chicago Style (17th ed.) Citation

Lewis, C. S., Wayne Martindale, and Jerry Root. The Quotable Lewis. Wheaton (Illinois): Tyndale House, 1989.

MLA (9th ed.) Citation

Lewis, C. S., et al. The Quotable Lewis. Tyndale House, 1989.