Cita APA (7a ed.)

Worldwatch Institute, Starke, L., & Assadourian, E. (2007). Vital signs 2007-2008: The trends that are shaping our future. W.W. Norton & Company.

Cita Chicago Style (17a ed.)

Worldwatch Institute, Linda Starke, y Erik Assadourian. Vital Signs 2007-2008: The Trends That Are Shaping Our Future. New York [etc.]: W.W. Norton & Company, 2007.

Cita MLA (9a ed.)

Worldwatch Institute, et al. Vital Signs 2007-2008: The Trends That Are Shaping Our Future. W.W. Norton & Company, 2007.