Emmons, R. A., & Mishra, A. (2011). Ch. 16: Why gratitude enhances well-being: What we know, what we need to know. En Sheldon, Kashdan & Steger (Eds.), Designing positive psychology: Taking stock and moving forward. New York, USA: Oxford University Press. Retrieved from http://emmons.faculty.ucdavis.edu/wp-content/uploads/sites/90/2015/08/2011_2-16_Sheldon_Chapter-16-11.pdf
Moyano, N. (2010). Gratitud en la psicología positiva. Psicodebate, 10, 103-118. Retrieved from
https://pub.palermo.edu/ojs/index.php/psicodebate/
article/viewFile/391/174
Froh, J., Emmons R., Card, N., Bono, G. y Wilson, J. (2010). Gratitude and the Reduced Costs of Materialism in Adolescents. Journal of Happiness Studies, 12, 289 – 302. Retrieved from http://emmons.faculty.ucdavis.edu/wp-content/uploads/sites/90/2015/08/2010_1-materialism1.pdf
Fundación Televisa (2013). Frases de gratitud. Retrieved from http://www.fundaciontelevisa.org/valores/frases/frases-de-gratitu/
Lyubomirsky, S. (s. f.). How to Practice Gratitude. From The How of Happiness. Retrieved from http://www.gratefulness.org/readings/practice_
gratitude.htm
Emmons, R. A (2008). ¡Gracias!: de cómo la gratitud puede hacerte feliz. México: Ediciones B
Kennon M. S., Todd B. K., and Michael F. S. (2011). Designing Positive Psychology: Taking Stock and Moving Forward. EE.UU. Oxford Scholarship. Cap. 16.