APA (7th ed.) Citation

(1999). The 1997-1998 El Nino event: A scientific and technical retrospective. World Meteorological Organization.

Chicago Style (17th ed.) Citation

The 1997-1998 El Nino Event: A Scientific and Technical Retrospective. Geneva: World Meteorological Organization, 1999.

MLA (9th ed.) Citation

The 1997-1998 El Nino Event: A Scientific and Technical Retrospective. World Meteorological Organization, 1999.

Warning: These citations may not always be 100% accurate.