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Williams GC, McGregor HA, Zeldman A, Freedman ZR, Deci EL.Williams GC, et al.Health Psychol. 2004 Jan;23(1):58-66. doi: 10.1037/0278-6133.23.1.58.Health Psychol. 2004.PMID: 14756604
Williams GC, McGregor HA, King D, Nelson CC, Glasgow RE.Williams GC, et al.Patient Educ Couns. 2005 Apr;57(1):39-45. doi: 10.1016/j.pec.2004.04.001.Patient Educ Couns. 2005.PMID: 15797151
Niemiec CP, Ryan RM, Deci EL, Williams GC.Niemiec CP, et al. Among authors: williams gc.Patient Educ Couns. 2009 Feb;74(2):250-7. doi: 10.1016/j.pec.2008.08.015. Epub 2008 Oct 5.Patient Educ Couns. 2009.PMID: 18838243Free PMC article.Clinical Trial.
Rouse PC, Ntoumanis N, Duda JL, Jolly K, Williams GC.Rouse PC, et al. Among authors: williams gc.Psychol Health. 2011 Jun;26(6):729-49. doi: 10.1080/08870446.2010.492454.Psychol Health. 2011.PMID: 21827332
González MG, Swanson DP, Lynch M, Williams GC.González MG, et al. Among authors: williams gc.J Health Psychol. 2016 Jun;21(6):972-82. doi: 10.1177/1359105314543962. Epub 2014 Aug 7.J Health Psychol. 2016.PMID: 25104782
Halvari H, Healey J, Olafsen AH, Byrkjeland R, Deci EL, Williams GC.Halvari H, et al. Among authors: williams gc.Scand J Med Sci Sports. 2017 Nov;27(11):1454-1469. doi: 10.1111/sms.12757. Epub 2016 Sep 30.Scand J Med Sci Sports. 2017.PMID: 27688002Clinical Trial.
Halvari AE, Halvari H, Williams GC, Deci EL.Halvari AE, et al. Among authors: williams gc.Psychol Health. 2017 Feb;32(2):127-144. doi: 10.1080/08870446.2016.1244536. Epub 2016 Oct 26.Psychol Health. 2017.PMID: 27712095Clinical Trial.