Tubbs, S. L. (2007). A systems approach to small group interaction. Boston, Mass: McGraw-Hill.
Παραπομπή Chicago StyleTubbs, Stewart L. A Systems Approach to Small Group Interaction. Boston, Mass: McGraw-Hill, 2007.
Παραπομπή MLATubbs, Stewart L. A Systems Approach to Small Group Interaction. Boston, Mass: McGraw-Hill, 2007.
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