Cita APA

United Nations Environment Programme, Heywood, V. H., & Watson, R. T. (1995). Global biodiversity assessment. Cambridge University Press.

Citación estilo Chicago

United Nations Environment Programme, V. H. Heywood, and R. T. Watson. Global Biodiversity Assessment. Cambridge, New York, NY, USA: Cambridge University Press, 1995.

Cita MLA

United Nations Environment Programme, et al. Global Biodiversity Assessment. Cambridge University Press, 1995.