Gaya APA

Timmons, J, A., Spinelli, S. (2007). New Venture Creation Entrepreneurship For The 21st Century (7th ed). New York: Mc Graw Hill.

Gaya MLA

Timmons, Jeffry, A.., Spinelli, Stephen. "New Venture Creation Entrepreneurship For The 21st Century". 7th ed New York: Mc Graw Hill, 2007. Text.