Carnegie, D. (2004). 5 essential people skills: How to assert yourself , listen to others and resolve conflicts.
Styl cytowania ChicagoCarnegie, Dale. 5 Essential People Skills: How to Assert Yourself , Listen to Others and Resolve Conflicts. Simon & Schuster, 2004.
Styl cytowania MLACarnegie, Dale. 5 Essential People Skills: How to Assert Yourself , Listen to Others and Resolve Conflicts. 2004.
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