APA ציטוט

Drucker,Peter F. (1985). Innovation and entrepreneurship: Practice and principles. Heinemann.

Chicago Edition Citation

Drucker,Peter F. Innovation and Entrepreneurship: Practice and Principles. London: Heinemann, 1985.

ציטוט MLA

Drucker,Peter F. Innovation and Entrepreneurship: Practice and Principles. Heinemann, 1985.