Caplan, D. (2003). How to start a business for free: The ultimate guide to building something profitable from nothing. Silver Lake.
Chicago-Zitierstil (17. Ausg.)Caplan, David. How to Start a Business for Free: The Ultimate Guide to Building Something Profitable from Nothing. Los Angeles: Silver Lake, 2003.
MLA-Zitierstil (9. Ausg.)Caplan, David. How to Start a Business for Free: The Ultimate Guide to Building Something Profitable from Nothing. Silver Lake, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.