APA citiranje
Drucker, P. F. (1985). Innovation and entrepreneurship: Practice and principles. Harper & Row.
Chicago Style (17th ed.) Citation
Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. New York: Harper & Row, 1985.
MLA citiranje
Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. Harper & Row, 1985.
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