Bibliography
- Zook, Chris (2001). Profit from the Core: Growth Strategy in an Era of Turbulence. Boston: Harvard Business School Press. ISBN 1-578-51230-1.
- Zook, Chris (2004). Beyond the Core: Expand Your Market Without Abandoning Your Roots. Boston: Harvard Business School Press. ISBN 1-578-51951-9.
- Zook, Chris (2007). Unstoppable: Finding Hidden Assets to Renew the Core and Fuel Profitable Growth. Boston: Harvard Business School Press. ISBN 1-422-10366-8.
- Zook, Chris (2010). Profit from the Core: Growth Strategy in an Era of Turbulence (Updated Edition). Boston: Harvard Business School Press. ISBN 1-422-13111-4.
- Zook, Chris (2012). Repeatability: Build Enduring Businesses for a World of Constant Change. Boston: Harvard Business School Press. ISBN 1-422-14330-9.
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