APA (7th ed.) Citation

Lewis, C. S. (1968). Out of the silent planet. Longmans.

Chicago Style (17th ed.) Citation

Lewis, C. S. Out of the Silent Planet. London: Longmans, 1968.

MLA (9th ed.) Citation

Lewis, C. S. Out of the Silent Planet. Longmans, 1968.

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