Achor, S. (2013). Before happiness: The 5 hidden keys to achieving success, spreading happiness, and sustaining positive change.
Style de citation Chicago (17e éd.)Achor, Shawn. Before Happiness: The 5 Hidden Keys to Achieving Success, Spreading Happiness, and Sustaining Positive Change. 2013.
Style de citation MLA (8e éd.)Achor, Shawn. Before Happiness: The 5 Hidden Keys to Achieving Success, Spreading Happiness, and Sustaining Positive Change. 2013.
Attention : ces citations peuvent ne pas être correctes à 100%.