APA (7th ed.) Citation

Sinclair, U. (1939). Letters to a millionaire / by Upton Sinclair. T. Werner Laurie.

Chicago Style (17th ed.) Citation

Sinclair, Upton. Letters to a Millionaire / by Upton Sinclair. London: T. Werner Laurie, 1939.

MLA (9th ed.) Citation

Sinclair, Upton. Letters to a Millionaire / by Upton Sinclair. T. Werner Laurie, 1939.

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