APA
Zook C., . (2004). Beyond the core : expand your market without abandoning your roots. Harvard Business School Press, Boston: .
Chicago
Zook Chris, . 2004. Beyond the core : expand your market without abandoning your roots. Harvard Business School Press, Boston: .
Harvard
Zook C., . (2004). Beyond the core : expand your market without abandoning your roots. Harvard Business School Press, Boston: .
MLA
Zook Chris, . Beyond the core : expand your market without abandoning your roots. Harvard Business School Press, Boston: . 2004.