APA (7th ed.) Citation

(2007). What Are You Optimistic About?: Today's Leading Thinkers On Why Things Are Good And Getting Better. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

What Are You Optimistic About?: Today's Leading Thinkers On Why Things Are Good And Getting Better. New York,USA: HarperCollins Publishers, 2007.

MLA (9th ed.) Citation

What Are You Optimistic About?: Today's Leading Thinkers On Why Things Are Good And Getting Better. HarperCollins Publishers, 2007.

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