Gaya APA

Spinelli, J, A, S. (2009). New venture creation: entrepreneurship for the 21st century (9th ed.). Boston: Mc. Gravo Hill.

Gaya MLA

Spinelli, Jeffry, A.Timmons;, Stephen. "New venture creation: entrepreneurship for the 21st century". 9th ed. Boston: Mc. Gravo Hill, 2009. Text.