Carnegie, D. The leader in you how to win friends, influence people, and succeed in a changing world. Pocket Books.
Παραπομπή σε μορφή Chicago (17η εκδ.)Carnegie, Dale. The Leader in You How to Win Friends, Influence People, and Succeed in a Changing World. Pocket Books.
Παραπομπή σε μορφή MLA (8th εκδ.)Carnegie, Dale. The Leader in You How to Win Friends, Influence People, and Succeed in a Changing World. Pocket Books.
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