APA (7th ed.) Citation

Lewis, S. (1924). Free air / by S. Lewis. Cape.

Chicago Style (17th ed.) Citation

Lewis, Sinclair. Free Air / by S. Lewis. Cape, 1924.

MLA (9th ed.) Citation

Lewis, Sinclair. Free Air / by S. Lewis. Cape, 1924.

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