APA (7th ed.) Citation

Sowell, T. (1993). Is reality optional?: And other essays. Hoover Institution Press.

Chicago Style (17th ed.) Citation

Sowell, Thomas. Is Reality Optional?: And Other Essays. Stanford, Calif.: Hoover Institution Press, 1993.

MLA (9th ed.) Citation

Sowell, Thomas. Is Reality Optional?: And Other Essays. Hoover Institution Press, 1993.

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