Cita APA (7a ed.)

Brown, L. R., Renner, M., Halweil, B., & Starke, L. (1999). Vital signs 1999-2000: The environmental trends that are shaping our future. Earthscan.

Cita Chicago Style (17a ed.)

Brown, Lester Russell, Michael Renner, Brian Halweil, y Linda Starke. Vital Signs 1999-2000: The Environmental Trends That Are Shaping Our Future. London: Earthscan, 1999.

Cita MLA (9a ed.)

Brown, Lester Russell, et al. Vital Signs 1999-2000: The Environmental Trends That Are Shaping Our Future. Earthscan, 1999.