Drucker, P. F., & Peter F. Drucker. Managing oneself. Boston, Mass: Harvard Business Press.
शिकागो स्टाइल उद्धरणDrucker, Peter F., और Peter F. Drucker. Managing Oneself. Boston, Mass: Harvard Business Press.
एमएलए उद्धरणDrucker, Peter F., और Peter F. Drucker. Managing Oneself. Boston, Mass: Harvard Business Press.
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