Timmons, J. A., & Spinelli, S. (2004). New Venture Creation: Entrepreneurship for the 21st century (6th ed.). Boston: McGraw-Hill/Irwin.

Timmons, Jeffry A., and Stephen Spinelli. New Venture Creation: Entrepreneurship for the 21st Century. 6th ed. Boston: McGraw-Hill/Irwin, 2004.

Timmons, Jeffry A., and Stephen Spinelli. New Venture Creation: Entrepreneurship for the 21st Century. 6th ed. Boston: McGraw-Hill/Irwin, 2004.