Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

Precaución: Estas citas no son 100% exactas.