APA aipamena

Drucker, P. F. (1985). Innovation and entrepreneurship: Practice and principles. New York: Harper & Row.

Chicago Style aipamena

Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. New York: Harper & Row, 1985.

MLA aipamena

Drucker, Peter F. Innovation and Entrepreneurship: Practice and Principles. New York: Harper & Row, 1985.

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