Harvard Business School. (2005). Entrepreneur's Toolkit: Tools and Techniques to Launch and Grow your New Business. Harvard Business School Press.
Lua i Stíl Chicago (17ú heag.)Harvard Business School. Entrepreneur's Toolkit: Tools and Techniques to Launch and Grow Your New Business. Boston, Massachuttes: Harvard Business School Press, 2005.
Lua MLA (9ú heag.)Harvard Business School. Entrepreneur's Toolkit: Tools and Techniques to Launch and Grow Your New Business. Harvard Business School Press, 2005.
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