APA (7th ed.) Citation

The optimist's/pessimist's handbook: A companion to hope and despair.

Chicago Style (17th ed.) Citation

The Optimist's/pessimist's Handbook: A Companion to Hope and Despair. 2008.

MLA (9th ed.) Citation

The Optimist's/pessimist's Handbook: A Companion to Hope and Despair.

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