APA (7th ed.) Citation

McCall Smith, A., & Porter, D. (2009). The lost art of gratitude (Unabridged.). Recorded Books Inc..

Chicago Style (17th ed.) Citation

McCall Smith, Alexander, and Davina Porter. The Lost Art of Gratitude. Unabridged. Prince Frederick: Recorded Books Inc., 2009.

MLA (8th ed.) Citation

McCall Smith, Alexander, and Davina Porter. The Lost Art of Gratitude. Unabridged. Recorded Books Inc., 2009.

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