Lewis, S. (2011). Positive psychology at work: How positive leadership and appreciative inquiry create inspiring organizations. Wiley. https://doi.org/10.1002/9781119990390
Παραπομπή σε μορφή Chicago (17η εκδ.)Lewis, Sarah. Positive Psychology at Work: How Positive Leadership and Appreciative Inquiry Create Inspiring Organizations. Hoboken, N.J.: Wiley, 2011. https://doi.org/10.1002/9781119990390.
Παραπομπή σε μορφή MLA (8th εκδ.)Lewis, Sarah. Positive Psychology at Work: How Positive Leadership and Appreciative Inquiry Create Inspiring Organizations. Wiley, 2011. https://doi.org/10.1002/9781119990390.
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