APA (7th ed.) Citation

Smith, M. A. (2009). The lost art of gratitude. Abacus.

Chicago Style (17th ed.) Citation

Smith, McCall Alexander. The Lost Art of Gratitude. London: Abacus, 2009.

MLA (9th ed.) Citation

Smith, McCall Alexander. The Lost Art of Gratitude. Abacus, 2009.

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