Levy, M. A. (2009). Happy About knowing what to expect in 2009: Business, electronic, consumer and political trends. HappyAbout.info.
Chicago-Zitierstil (17. Ausg.)Levy, Mitchell A. Happy About Knowing What to Expect in 2009: Business, Electronic, Consumer and Political Trends. Cupertino, CA: HappyAbout.info, 2009.
MLA-Zitierstil (9. Ausg.)Levy, Mitchell A. Happy About Knowing What to Expect in 2009: Business, Electronic, Consumer and Political Trends. HappyAbout.info, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.