APA citiranje

Drucker, P. F. (2004). Innovation and entrepreneurship: Practics and principles. Amsterdam: Elsevier.

Trích dẫn kiểu Chicago

Drucker, Peter F. Innovation and Entrepreneurship: Practics and Principles. Amsterdam: Elsevier, 2004.

MLA citiranje

Drucker, Peter F. Innovation and Entrepreneurship: Practics and Principles. Amsterdam: Elsevier, 2004.

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