Greenberg, J. S. (2011). Comprehensive stress management. 12th ed: McGraw-Hill Companies,Incorporated.
Παραπομπή Chicago StyleGreenberg, Jerrold S. Comprehensive Stress Management. 12th ed: McGraw-Hill Companies,Incorporated, 2011.
Παραπομπή MLAGreenberg, Jerrold S. Comprehensive Stress Management. 12th ed: McGraw-Hill Companies,Incorporated, 2011.
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