APA (7th ed.) Citation

Friis-Christensen, E., & Lassen, K. (1992). Global temperature variations and possible association with solar activity variations. Danish Meteorological Institute.

Chicago Style (17th ed.) Citation

Friis-Christensen, Eigil, and K. Lassen. Global Temperature Variations and Possible Association with Solar Activity Variations. Copenhagen: Danish Meteorological Institute, 1992.

MLA (9th ed.) Citation

Friis-Christensen, Eigil, and K. Lassen. Global Temperature Variations and Possible Association with Solar Activity Variations. Danish Meteorological Institute, 1992.