APA (7th ed.) Citation

Spielhagen, R. F. (2011). Observed variability from instrumental records and proxy data.

Chicago Style (17th ed.) Citation

Spielhagen, Robert F. Observed Variability from Instrumental Records and Proxy Data. 2011.

MLA (8th ed.) Citation

Spielhagen, Robert F. Observed Variability from Instrumental Records and Proxy Data. 2011.

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