Worldwatch Institute. (2010). Vital signs 2010: The trends that are shaping our future. Worldwatch Institute.
Cita Chicago Style (17a ed.)Worldwatch Institute. Vital Signs 2010: The Trends That Are Shaping Our Future. Washington: Worldwatch Institute, 2010.
Cita MLA (9a ed.)Worldwatch Institute. Vital Signs 2010: The Trends That Are Shaping Our Future. Worldwatch Institute, 2010.
Precaución: Estas citas no son 100% exactas.