Gaya APA

Timmons, J, A., Spinelli, S. (2007). New venture creation : entrepreneurship for the 21 st century (7th ed). Boston: McGraw-Hill.

Gaya MLA

Timmons, Jeffrey, A.., Spinelli, Stephen. "New venture creation : entrepreneurship for the 21 st century". 7th ed Boston: McGraw-Hill, 2007. Text.