Cita APA

Bakkes, J. A., Berk, M. M., Langeweg, F., Van Vuuren, D. P., & Van Woerden, J. W. (1998). A contribution to UNEP's strategy for monitoring and assessment. The Netherlands: National Institute of Public Health and the Environment.

Citación estilo Chicago

Bakkes, J. A., M. M. Berk, F. Langeweg, Detlef P. Van Vuuren, y J. W. Van Woerden. A Contribution to UNEP's Strategy for Monitoring and Assessment. The Netherlands: National Institute of Public Health and the Environment, 1998.

Cita MLA

Bakkes, J. A., et al. A Contribution to UNEP's Strategy for Monitoring and Assessment. The Netherlands: National Institute of Public Health and the Environment, 1998.