APA (7th ed.) Citation

ZOOK. (2004). Beyond the core: Expand your market without abandoning your roots. Harvard Business School Press.

Chicago Style (17th ed.) Citation

ZOOK. Beyond the Core: Expand Your Market Without Abandoning Your Roots. Massachusetts: Harvard Business School Press, 2004.

MLA (9th ed.) Citation

ZOOK. Beyond the Core: Expand Your Market Without Abandoning Your Roots. Harvard Business School Press, 2004.