Tulgan, B. (2007). It's okay to be the boss: The step-by-step guide to becoming the manager your employees need. HarperCollins Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Tulgan, Bruce. It's Okay to Be the Boss: The Step-by-step Guide to Becoming the Manager Your Employees Need. New York: HarperCollins Publishers, 2007.
Παραπομπή σε μορφή MLA (8th εκδ.)Tulgan, Bruce. It's Okay to Be the Boss: The Step-by-step Guide to Becoming the Manager Your Employees Need. HarperCollins Publishers, 2007.
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