APA (7th ed.) Citation

World Climate Data Programme, World Meteorological Organization, & Global Environmental Monitoring System. (1987). The Global climate system: Autumn 1984 - spring 1986. World Meteorological Organization.

Chicago Style (17th ed.) Citation

World Climate Data Programme, World Meteorological Organization, and Global Environmental Monitoring System. The Global Climate System: Autumn 1984 - Spring 1986. Geneva: World Meteorological Organization, 1987.

MLA (9th ed.) Citation

World Climate Data Programme, et al. The Global Climate System: Autumn 1984 - Spring 1986. World Meteorological Organization, 1987.